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1/41 TDA7511 november 2001 fm-part n rf agc generation by rf and if detection for pin diodes and mosfet (prestage) n 1 st mixer for 1st fm if 10.7mhz with programmable if tank adjust for fm and am upconversion n 2 programmable if-gain stages n 2 nd mixer for 2nd if 450khz n internal if bandpass filter with three bandwidths controlled by iss (including weather band) n fully integrated fm-demodulator am-part n wide and narrow agc generation n preamplifier and mixer for 1st if 10.7mhz, am upconversion n 2 nd mixer for 2nd if 450khz n integrated am-demodulator n output for am-stereo-decoder additional features n high performance fast pll for rds- system n if counter for fm and am upconversion with search stop signal n quality detector for level, deviation, adjacent channel and multipath n quality detection informations as analog signals external available n iss (intelligent selectivity system) for cancellation of adjacent channel and noise influences n adjacent channel mute n fully electronic alignment n all functions i 2 c-bus controlled n iss filter status information i 2 c-bus readable description the tda 7511 is a high performance tuner circuit for am/fm car radio. it contains mixers, if amplifiers, de- modulators for am and fm, quality detection, iss fil- ter and pll synthesizer with if counter on a single chip. use of bicmos technology allows the implementa- tion of several tuning functions and a minimum of ex- ternal components. tqfp64 ordering number: TDA7511 am/fm tuner for car radio and hifi applications
TDA7511 2/41 block diagram 99at0052 xtal adjacent channel detection multipath detection deviation detection s-meter 10.7mhz cp pll pd ifc s-meter 27 21 23 20 22 24 58 14 55 56 20 13 iss 450khz divider ref dem mpx dem soft/ac mute af dagc dem 15 43 38 39 41 40 stopstation mux agc vco + 28 10 12 30 31 32 divider 1 2 wagc 3 4 64 7 9 18 19 16 17 8 11 6 5 supply 57 59 54 52 50 46 45 v cc1 v cc2 i 2 c bus 48 25 26 33 36 51 49 61 62 60 35 44 47 42 37 34 amif1in 63 v cc3 fm am 53 amifin pin pin + logic
3/41 TDA7511 pin connection (top view) pin description (continued) n pin function 1 ammix1in2 am input2 mixer1 2 ammix1in1 am input1 mixer1 reference 3 amrfagcin input am rf agc 4 amrfagcout output am rf agc 5 fmpindr fm pin diode driver output 6 fmmosdr fm mos driver output 7 fmmix1in1 fm input1 mixer1 8 gndrf rf ground 9 fmmix1in2 fm input2 mixer1 10 tv1 tuning voltage 1 11 fmrfagcin fm rf agc input 12 tv2 tuning voltage 2 13 adjch ident. adjacent channel output 14 fsu unweighted fieldstrength output 99at0053 ammix1in2 1 ammix1in1 2 3 amrfagcin 4 amrfagcout 5 fmpindr fmmosdr 6 7 fmmix1in1 8 gndrf 9 fmmix1in2 tv1 10 11 fmrfagcin 40 39 38 27 vcc3 26 scl 25 sda 24 sstop gndvcc3 23 22 xtalg 21 xtald 20 devtc vcoe 19 18 vcob 17 gndvco amif1in ampindr amrfagctc mix1out1 mix1out2 fmifagcin gndifamp fmamp1in ammix2out1 ammix2out2 fmamp1out 64 63 62 61 60 59 58 57 56 55 54 vref1 gnddem fmmix2in1 fmmix2in2 fmdemc amif2in mutetc amdetc amagc2tc amifbpf amifref 48 47 46 45 44 43 42 41 tv2 12 13 adjch 14 fsu 15 isstc vccvco 16 28 lpout vref2 29 lpam 30 lpfm 31 32 lphc 53 fmif1ref 52 fmamp2in 51 vcc2 fmamp2out 50 49 gndvcc2 mpx/afam 37 36 vcc1 35 fsw 34 amst/mp gndvcc1 33
TDA7511 4/41 15 isstc time constant for iss filter switch 16 vccvco vco supply 17 gndvco vco ground 18 vcob vco input base 19 vcoe vco output emitter 20 devtc deviation detector time constant 21 xtald xtal oscillator to mos drain 22 xtalg xtal oscillator to mos gate 23 gndvcc3 vcc3 ground 24 sstop search stop output 25 sda i 2 c-bus data 26 scl i 2 c-bus clock 27 vcc3 supply tuning voltage 28 lpout op amp output to pll loop filters 29 vref2 voltage reference for pll op amp 30 lpam op amp input to pll loop filters am 31 lpfm op amp input to pll loop filters fm 32 lphc high current pll loop filter input 33 gndvcc1 digital ground 34 amst/mp am stereo out / ident. multipath output 35 fsw weighted fieldstrength output 36 vcc1 digital supply 37 mpx/afam mpx output / am af output 38 amifref reference voltage am if amp 39 amifbpf am if filter 40 amagc2tc am agc2 time constant 41 amdetc am detector capacitor 42 mutetc softmute time constant 43 amif2in input am if2 44 fmdemc fm demodulator reference 45 fmmix2in2 fm if1 mix2 input1 46 fmmix2in1 fm if1 mix2 input2 47 gnddem ground fm demodulator 48 vref1 reference 5v 49 gndvcc2 analog ground 50 fmamp2out fm if1 amplifier2 output pin description (continued) n pin function
5/41 TDA7511 absolute maximum ratings thermal data 51 vcc2 analog supply 52 fmamp2in fm if1 amplifier2 input 53 fmif1ref fm if1 amplifier reference 54 fmamp1out fm if1 amplifier1 output 55 ammix2out2 am tank 450khz 56 ammix2out1 am tank 450khz 57 fmamp1in fm if1 amplifier1 input 58 amif1in am if1 input 59 gndif1amp fm if1 amplifier ground 60 fmif1agcin fm if1 agc input 61 mix1out2 mix tank 10.7mhz 62 mix1out1 mix tank 10.7mhz 63 amrfagctc am rf agc time constant 64 ampindr am pin diode driver output symbol parameter value unit v s supply voltage 10.5 v t amb ambient temperature -40 to 85 c t stg storage temperature -55 to +150 c symbol parameter value unit r th(j-amb) thermal resistance 68 c/w electrical characteristcs t amb = +25c, v cc1 = v cc2 = v cc3 = v ccvco = v ccmix1 = 8.5v, f rf = 98mhz, dev. = 40khz, f mod =1khz, f if1 = 10.7mhz, f if2 = 450khz, f xtal = 10.25mhz, in test or application circuit, unless otherwise specified. symbol parameter test condition min. typ. max. unit supply v cc1 digital supply voltage 7.5 8.5 10 v v cc2 analog supply voltage 7.5 8.5 10 v v cc3 analog tuning voltage 7.5 8.5 10 v v ccvco vco supply voltage 7.5 8.5 10 v pin description (continued) n pin function
TDA7511 6/41 v ccmix1 mix1 supply voltage 7.5 8.5 10 v v ccmix2 mix2 supply voltage 7.5 8.5 10 v i cc1 supply current fm on 7.5 ma i cc1 supply current am on 10 ma i cc2 supply current fm on 50 ma i cc2 supply current am on 60 ma i cc3 supply current 2 ma i ccvco supply current 2.5 ma i ccmix1 supply current fm on 6 ma i ccmix1 supply current am on 5 ma i ccmix2 supply current am on 5 ma reference voltages v ref1 internal reference voltage i ref1 = 0ma 5 v v ref2 internal reference voltage i ref2 = 0ma 2.5 v wide band rf agc v 11 threshold agc start v 6 = v cc2 /2 80 db m v r in input resistance 500 w c in input capacitance 2.5 pf narrow band rf & keying agc v 60 lower threshold fmagc, v 11 = 0mv rms 82 db m v v 60 upper threshold fmagc, v 11 = 0mv rms 92 db m v r in input resistance 10 k w c in input capacitance 2.5 pf agc mosfet driver output v 6 max. agc output voltage v 11 = 0mv rms v cc2 -0.5v v v 6 min. agc output voltage v 11 = 50mv rms 0.5 v i 6 min. agc charge current v 11 = 0mv rms ,v 6 = v cc2 /2 -12.5 m a i 6 max. agc discharge current v 11 = 50mv rms ,v 6 = v cc2 /2 1.25 ma agc pin diode driver output i 5 agc out, current min. v 11 = 0mv rms , v 5 = 2v 50 m a i 5 agc out, current max. v 11 = 50 mv rms , v 5 = 2v -6 ma mixer1 (10.7mhz) r in input impedance balanced, f = 98mhz 9 w electrical characteristcs (continued) t amb = +25c, v cc1 = v cc2 = v cc3 = v ccvco = v ccmix1 = 8.5v, f rf = 98mhz, dev. = 40khz, f mod =1khz, f if1 = 10.7mhz, f if2 = 450khz, f xtal = 10.25mhz, in test or application circuit, unless otherwise specified. symbol parameter test condition min. typ. max. unit
7/41 TDA7511 ip3 3rd order intercept point 122 db m v f noise figure 6db a c conversion gain 120 ms if1 amplifier1 & 2 (10.7mhz) a min min. gain ifg 9 db a max max. gain ifg 15 db r in input resistance 330 w r out output resistance 330 w p 1db 1db compression point output referred 120 db m v ip3 3rd order intercept point output referred 132 db m v mixer2 (450khz) r in input impedance 330 w v 46 max. input voltage 900 mv rm s v 48 limiting sensitivity s/n = 20db 25 m v a mixer gain 18 db limiter 1 (450khz) g limiter gain 80 db demodulator, audio output thd dev.= 75khz, v 46 = 10mv rms 0.1 % v mpx mpx output signal dev.= 75khz 500 mv rm s r out output resistance 350 w | d v| min dc offset fine adjust dem, mena=1 6 mv | d v| max dc offset fine adjust dem, mena=1 186 mv s/n dev.= 40khz,v 46 = 10mv rms 75 db quality detection s-meter, unweighted fieldstrength v 46 min. input voltage mix2 10 m v d v per decade smsl = 0 1 v d v per decade smsl = 1 1.5 v v 14 fieldstrength output v 46 = 0v rms 0.1 v v 14 fieldstrength output v 46 = 1v rms 4.9 v r out output resistance 4 k w electrical characteristcs (continued) t amb = +25c, v cc1 = v cc2 = v cc3 = v ccvco = v ccmix1 = 8.5v, f rf = 98mhz, dev. = 40khz, f mod =1khz, f if1 = 10.7mhz, f if2 = 450khz, f xtal = 10.25mhz, in test or application circuit, unless otherwise specified. symbol parameter test condition min. typ. max. unit
TDA7511 8/41 d v 14 s-meter shift voltage sl -1.8 1.8 v tk temp coeff. 0 ppm/k s-meter, weighted fieldstrength v 35 fieldstrength output v 46 = 0v rms 2.5 v v 35 fieldstrength output v 46 = 1v rms 4.9 v r out output resistance 12 k w adjacent channel gain a min gain minimum acg 32 db a max gain maximum acg 38 db adjacent channel filter f hp -3db frequency highpass acf 100 khz f bp centre frequency acf 100 khz f -20db attenuation 20db 70 khz adjacent channel output v 13 output voltage low 0.1 v v 13 output voltage high 4.9 v r out output resistance 4 k w multipath channel gain a min gain minimum mpg 12 db a max gain maximum mpg 23 db multipath bandpass filter f lower centre frequency low mpf 19 khz f upper centre frequency up mpf 31 khz q quality factor 5 10 multipath output v 34 output voltage low 0.1 v v 34 output voltage high 4.9 v r out output resistance 2.5 k w iss (intelligent selectivity system) filter 450khz f centre centre frequency f ref_intern = 450khz 450 khz bw 3db bandwidth, -3db iss80 = 1 80 khz bw 20db bandwidth, -20db iss80 = 1 150 khz electrical characteristcs (continued) t amb = +25c, v cc1 = v cc2 = v cc3 = v ccvco = v ccmix1 = 8.5v, f rf = 98mhz, dev. = 40khz, f mod =1khz, f if1 = 10.7mhz, f if2 = 450khz, f xtal = 10.25mhz, in test or application circuit, unless otherwise specified. symbol parameter test condition min. typ. max. unit
9/41 TDA7511 bw 3db bandwidth, -3db iss80 = 0 120 khz bw 20db bandwidth, -20db iss80 = 0 250 khz bw 3db bandwidth weather band iss30 = 1 30 khz bw 20db -20db weather band iss30 = 1 80 khz d f min fine adjust aiss -20 khz d f max fine adjust aiss 10 khz adjacent channel iss filter threshold v nth internal low threshold acnth 0 v v nth internal high threshold acnth 0.3 v v wth internal low threshold acwth 0.25 v v wth internal high threshold acwth 0.95 v multipath threshold v thmp internal low threshold mpth 0.50 v v thmp internal high threshold mpth 1.25 v iss filter time constant i 15 charge current low mid tiss, issctl = 1 -74 m a i 15 charge current high mid tiss, issctl = 1 -60 m a i 15 charge current low narrow tiss, issctl = 1 -124 m a i 15 charge current high narrow tiss, issctl = 1 -110 m a i 15 discharge current low tiss, issctl = 0 1 m a i 15 discharge current high tiss, issctl = 0 15 m a v 15 low voltage issctl = 0 0.1 v v 15 high voltage issctl = 1 4.9 v iss filter switch threshold v 15 threshold iss on issctl = 0 3 v v 15 threshold iss off issctl = 0 1 v v 15 threshold iss narrow on issctl = 0 4 v v 15 threshold iss narrow off issctl = 0 2 v i 20 charge current low tdev -20 m a i 20 charge current high tdev -34 m a i 20 discharge current low tdev 6 m a i 20 discharge current high tdev 20 m a electrical characteristcs (continued) t amb = +25c, v cc1 = v cc2 = v cc3 = v ccvco = v ccmix1 = 8.5v, f rf = 98mhz, dev. = 40khz, f mod =1khz, f if1 = 10.7mhz, f if2 = 450khz, f xtal = 10.25mhz, in test or application circuit, unless otherwise specified. symbol parameter test condition min. typ. max. unit
TDA7511 10/41 dev wth internal low threshold dwth 30 khz dev wth internal high threshold dwth 75 khz ratio mi n referred to threshold dth 1 ratio m ax referred to threshold dth 1.5 softmute v ant upper startpoint smth, smd, slope = 0 16 db m v v ant lower startpoint smth, smd, slope = 0 3 db m v a smmin min. softmute depth smd, slope = 0, smth upper 18 db a smmax max. softmute depth smd, slope = 0, smth upper 36 db a smthis s mute depth threshold for iss filter on smcth 0.2 2 db v acth internal ac mute threshold acm 60 220 mv a smac ac mute depth 6 db i 42 charge current -47.5 m a i 42 discharge current 2.5 m a s/n over all s/n v in_min = 60db m v, dev.= 40khz,lp=15khz deemphasis t = 50 m s 66 db electrical characteristics t amb = +25c, v cc1 = v cc2 = v cc3 = v ccvco = v ccmix1 = v ccmix2 =8.5v, f rf =1mhz, f mod = 400hz at 30% amf if1 = 10.7mhz, f if2 = 450khz, f xtal = 10.25mhz, in test or application circuit, (unless otherwise noted, v inrf antenna input). symbol parameter test condition min. typ. max. unit am section global v inrf min max. sensitivity ref.: v inrf = 74db m v, d v 37 = -10db 19 db m v v inrf us usable sensitivity (s+n)/n = 20 db 30 26 db m v d v inrf agc range ref.: v inrf = 74db m v, d v 37 = -10db 51 db (s+n)/n signal to noise ratio ref.: v inrf = 74db m v 49 56 db electrical characteristcs (continued) t amb = +25c, v cc1 = v cc2 = v cc3 = v ccvco = v ccmix1 = 8.5v, f rf = 98mhz, dev. = 40khz, f mod =1khz, f if1 = 10.7mhz, f if2 = 450khz, f xtal = 10.25mhz, in test or application circuit, unless otherwise specified. symbol parameter test condition min. typ. max. unit
11/41 TDA7511 a if if rejection ref: v inrf = 74db m v, if1 = 10.7mhz if2 = 450khz d v 37 = -10db 100 100 db db a tw tweet c 28 = 22 m f -3 -0.7 db f af frequency response ref.: v inrf = 74db m v, d v af = -3 db 3.6 khz v inrfss seek stop sensitivity amss 20 35 45 db m v thd total harmonic distortion v inrf = 74 db m v, m = 0.8 m = 0.3 v inrf = 120 db m v, m = 0.8 m = 0.3 0.5 0.3 1.0 0.3 % v 37 output level v inrf = 74 db m v 220 mv rm s v 34 output level v inrf = 74 db m , m=off 190 mv rm s v 3 min. rf agc threshold max. rf agc threshold amagc wide 82 98.8 db m v db m v v 58 min. if agc threshold max. if agc threshold amagc middle 80.1 96.8 db m v db m v v 3 min. if agc threshold max. if agc threshold dagc narrow 32.6 80.7 db m v db m v r 63out output impedance 100 k w r 40out output impedance amseek = 0 150 k w r 40out output impedance amseek = 1 5 k w agc voltage driver output v 4 max. agc output voltage 3.5 v v 4 min. agc output voltage 0.5 v |i 4 | agc current 100 m a agc pin diode driver output i 64 agc driver current 1.5 ma am mixer1 (10.7mhz) r in input impedance 1.2 k w ip3 3rd order intercept point 140 db m v f noise figure 7db electrical characteristics (continued) t amb = +25c, v cc1 = v cc2 = v cc3 = v ccvco = v ccmix1 = v ccmix2 =8.5v, f rf =1mhz, f mod = 400hz at 30% amf if1 = 10.7mhz, f if2 = 450khz, f xtal = 10.25mhz, in test or application circuit, (unless otherwise noted, v inrf antenna input). symbol parameter test condition min. typ. max. unit
TDA7511 12/41 a gain 6db c min min. capacitance step if1t 0.55 pf c max max. capacitance if1t 8.25 pf c 61-62 if1t 2 pf am mixer2 (450khz) r in input impedance dependent on application 5 k w ip3 3rd order intercept point 140 db m v f noise figure 12 db a max. gain mixer2 tank output 15 db d a gain control range 20 db c min min. cap step if2t 1.6 pf c max max. cap if2t 24 pf c 55-56 if2t 2 pf electrical characteristics symbol parameter test condition min. typ. max. unit additional parameters outputs of tuning voltage(tv1, tv2) v out output voltage tvr,tvo 1 vcc3- 1v v r out output impedance 20 k w xtal reference oscillator f lo reference frequency c load = 15pf 10.25 mhz c step min. cap step xtal 0.6 pf c max max. cap xtal 19.4 pf d f/f freq. deviation versus vcc2 d v cc2 = 1v 1.5 ppm/v d f/f freq. deviation versus temp -40c < t < +85c 0.2 ppm/k i 2 c-bus interface f scl clock frequency 400 khz v il input low voltage 1v electrical characteristics (continued) t amb = +25c, v cc1 = v cc2 = v cc3 = v ccvco = v ccmix1 = v ccmix2 =8.5v, f rf =1mhz, f mod = 400hz at 30% amf if1 = 10.7mhz, f if2 = 450khz, f xtal = 10.25mhz, in test or application circuit, (unless otherwise noted, v inrf antenna input). symbol parameter test condition min. typ. max. unit
13/41 TDA7511 v ih input high voltage 3 v i in input current -5 5 m a v o output voltage sda acknowledge i o = 1.6ma 0.4 v loop filter input/output -i in input leakage current v in = gnd, pd out = tristate -0.1 0.1 m a i in input leakage current v in = vref1 pd out = tristate -0.1 0.1 m a v ol output voltage low i out = -0.2ma 0.05 0.5 v v oh output voltage high i out = 0.2ma vcc3 -0.5 vcc3 -0.05 v i out output current, sink v out = 1v to v cc3 -1v 10 ma i out output current, source v out = 1v to v cc3 -1v -10 ma voltage controlled oscillator (vco) f vcomin minimum vco frequency 50 mhz f vcomax maximum vco frequency 200 mhz c/n carrier to noise 1khz offset 85 dbc sstop output v 24 output voltage low i 24 = -20 m a 0.2 v v 24 output voltage high i 24 = 20 m a 3v v 46 if counter sensitivity antenna input 6 db m v electrical characteristics (continued) symbol parameter test condition min. typ. max. unit
TDA7511 14/41 1 functional description 1.1 fm section 1.2 mixer1, agc and 1.if mixer1 is a wide dynamic range stage with low noise and large input signal performance. the mixer1 tank can be adjusted by software (if1t). the agc operates on different sensitivities and bandwidths (fmagc) in order to improve the input sensitivity and dynamic range (keying agc). the output signals of agc are controlled volt- age and current for preamplifier and prestage pin diode attenuator. (look at figure 4) two 10.7mhz programmable amplifiers (ifg1, ifg2) correct the if ceramic insertion loss and the costumer lev- el plan application. 1.3 mixer2, limiter and demodulator in this 2. mixer stage the first 10.7mhz if is converted into the second 450khz if. a multi-stage limiter generates signals for the complete integrated demodulator without external tank. mpx output dc offset compensation is possible by software (dem). 1.4 quality detection and iss (look at figure 2) fieldstrength parallel to mixer2 input a 10.7mhz limiter generates a signal for digital if counter and a fieldstrength output sig- nal. this internal unweighted fieldstrength is used for keying agc, adjacent channel and multipath detection and is available at pin14 (fsu) after +6db buffer stage. the behaviour of this output signal can be corrected for dc offset (sl) and slope (smsl). the internal generated unweighted fieldstrength is filtered at pin35 and used for softmute function and generation of iss filter switching signal for weak input level (sm). adjacent channel detector the input of the adjacent channel detector is ac coupled from internal unweighted fieldstrength. a programma- ble highpass or bandpass (acf) and amplifier (acg) as well as rectifier determines the influences. this voltage is compared with adjustable comparator1 thresholds (acwth, acnth). the output signal of this comparator generates a dc level at pin15 by programmable time constant. time control (tiss) for a present adjacent chan- nel is made by charge and discharge current after comparator1 in an external capacitance. the charge current is fixed and the discharge current is controlled by i 2 c bus. this level produces digital signals (ac, ac+) in an additional comparator4. the adjacent channel information is available as analog output signal after rectifier and +8db output buffer. multipath detector the input of the multipath detector is ac coupled from internal unweighted fieldstrength. a programmable band- pass (mpf) and amplifier (mpg) as well as rectifier determines the influences. this voltage is compared with an adjustable comparator2 thresholds (mpth). the output signal of this comparator2 is used for the "milano" effect. in this case the adjacent channel detection is switched off. the "milano" effect is selectable by i 2 c bus (mpoff). the multipath information is available as analog output signal after rectifier and +8db output buffer. 450khz if narrow bandpass filter (iss filter) the device gets an additional second if narrow bandpass filter for suppression noise and adjacent channel sig- nal influences. this narrow filter has three switchable bandwidthes, narrow range of 80khz, mid range of 120khz and 30khz for weather band information. without iss filter the if bandwidth (wide range) is defined only by ceramic filter chain. the filter is switched in after mixer2 before 450khz limiter stage. the centre fre- quency and matching to the demodulator center frequency can be fine adjusted (aiss) by software.. deviation detector in order to avoid distortion in audio output signal the narrow iss filter is switched off for present overdeviation.
15/41 TDA7511 hence the demodulator output signal is detected. a lowpass filtering and peak rectifier generates a signal that is defined by software controlled current (tdev) in an external capacitance. this value is compared with a pro- grammable comparator3 thresholds (dwth, dth) and generates two digital signals (dev, dev+). iss switch logic all digital signals coming from adjacent channel detector, deviation detector and softmute are acting via switch- ing matrix on iss filter switch. the if bandpass switch mode is controlled by software (isson, iss30, iss80, issctl). the switch on of the if bandpass is also available by manipulation of the voltage at pin15. two ap- plication modes are available (appm). the conditions are described in table 37. 1.5 soft mute control the external fieldstrength signal at pin 35 is the reference for mute control. the startpoint, mute depth and slope are programmable (smth, smd, slope) in a wide range. the time constant is defined by external capacitance. additional adjacent channel mute function is supported. a highpass filter with -3db threshold frequency of 100khz, amplifier and peak rectifier generates an adjacent noise signal from mpx output with the same time con- stant for softmute. this value is compared with comparator5 thresholds (acm). for present strong adjacent chan- nel the mpx signal is attenuated typical 6db. 1.6 am section the upconversion mixer1 is combined with a gain control circuit 1 sensing three input signals, narrow band in- formation at pin 39, upconversion signal at pin 58 and wide band information at pin 3.this gain control circuit gives two output signals. the first one is a current for pin diode attenuator and the second one is a voltage for preamplifier. it is possible to put in a separate narrow bandpass filter before mixer2 at pin 58. the intervention point for first agc (amagc) is programmable by software. the oscillator frequency for mixer1 is generated by dividing the fm vco frequency (amd). in mixer2 the if1 is downconverted into the if2 450khz. before the output signal reaches the 450khz tank an attenuator for if gain control 2 is passed. mixer1 and mixer2 tanks are software controlled adjustable (if1t, if2t). after filtering by ceramic filter a 450khz amplifier with a gain control 3 is included. the gain control 2 and 3 are the second agc and programmable too by software (dagc). in order to avoid an oscillation in intervention point it is important to know that the dagc threshold has to be smaller than amagc! . the demodulator is a peak detector. a further time constant with capacitor at pin40 produces a dc agc refer- ence voltage dependent on input signal. the time constant is switchable by ratio of 30. this is necessary for the station search function. the switching is software controlled (amseek). an internal comparator compares the agc voltage with a programmable reference (amss). consequently it is possible to generate a seekstop impulse over a defined range. a separate output is available for amif stereo or a permanent seek stop signal(sstsel). 1.7 pll and if counter section pll frequency synthesizer block this part contains a frequency synthesizer and a loop filter for the radio tuning system. only one vco is required to build a complete pll system for fm and am upconversion. for auto search stop operation an if counter system is available. the counter works in a two stages configuration. the first stage is a swallow counter with a two modulus (32/33) precounter. the second stage is an 11-bit programmable counter. the circuit receives the scaling factors for the programmable counters and the values of the reference frequen- cies via an i 2 c-bus interface.the reference frequency is generated by an adjustable internal (xtal) oscillator followed by the reference divider. the reference and step-frequencies are free selectable (rc, pc). output signals of the phase detector are switching the programmable current sources. the loop filter integrates
TDA7511 16/41 their currents to a dc voltage. the values of the current sources are programmable by 6 bits also received via the i 2 c bus (a, b, currh, lpf). to minimize the noise induced by the digital part of the system, a special guard area is implemented. the loop gain can be set for different conditions by setting the current values of the chargepump generator. frequency generation for phase comparison the rf signals applies a two modulus counter (32/33) pre-scaler, which is controlled by a 5-bit divider(a). the 5-bit register (pc0 to pc4) controls this divider. in parallel the output of the prescaler connects to an 11-bit di- vider(b). the 11-bit pc register (pc5 to pc15) controls this divider dividing range: f osc = (r+1) x f ref f vco = [33 x a + (b + 1 - a) x 32] x f ref f vco = (32 x b + a + 32) x f ref important: for correct operation: a 32; b 3 a three state phase comparator the phase comparator generates a phase error signal according to phase difference between f syn and f ref . this phase error signal drives the charge pump current generator. charge pump current generator this system generators signed pulses of current. the phase error signal decides the duration and polarity of those pulses. the current absolute values are programmable by a register for high current and b register for low current. inlock detector switching the chargepump in low current mode can be done either via software or automatically by the inlock detector, by setting bit ldena to "1". after reaching a phase difference of 10 - 40nsec and a delay of some times 1/f ref , the chargepump is forced in low current mode. a new pll divider alternation by i 2 c-bus will switch the chargepump in the high current mode. few programmable phase errors (d0, d1) are available for inlock detection the count of detected inlock informations, to release the inlock signal is adjustable (d2, d3), to avoid a switching to low current during a frequency jump. low noise cmos op-amp an internal voltage divider at pin vref2 connects the positive input of the low noise op-amp. the charge pump output connects the negative input. this internal amplifier in cooperation with external components can provide an active filter. the negative input is switchable to three input pins, to increase the flexibility in application. this feature allows two separate active filters for different applications. a logical "0" in the lpf register activates pin lpfm, otherwise pin lpam is active. while the high current mode is activated lphc is switched on. if counter block the input signal for fm and am upconversion is the same 10.7mhz if level after limiter. the grade of integration is adjustable by eight different measuring cycle times. the tolerance of the accepted count value is adjustable, to reach an optimum compromise for search speed and precision of the evaluation. for the fm range the center frequency of the measured count value is adjustable in 32 steps, to get the possi- bility of fitting the if-filter tolerance. in the am upconversion range an if frequency of 10.689mhz to 10.720mhz with 1khz steps is available.
17/41 TDA7511 the if-counter mode the if counter works in 2 modes controlled by ifcm register. sampling timer a sampling timer to generate the gate signal for the main counter is build with a 14-bit programmable counter (irc). in fm mode a 6.25khz, in am mode a 1khz basically signal is generated. this is followed by an asyn- chronous divider to generate several sampling times. intermediate frequency main counter this counter is a 11 - 21-bit synchronous autoreload down counter. five bits (cf) are programmable to have the possibility for an adjust to the frequency of the if-filter. the counter length is automatic adjusted to the cho- sen sampling time and the counter mode (fm, am-upc). at the start the counter will be loaded with a defined value which is an equivalent to the divider value (t sample xf if ). if a correct frequency is applied to the if counter frequency input at the end of the sampling time the main counter is changing its state from 0h to 1fffffh. this is detected by a control logic and an external search stop output is changing from low to high. the fre- quency range inside which a successful count result is adjustable by the ew bits. t tim = (irc + 1) / f osc t cnt = (cf + 1697) / f if fm mode t cnt = (cf + 10689) / f if am up conversion mode counter result succeeded: t tim 3 t cnt - t err t tim t cnt + t err counter result failed: t tim > t cnt + t err t tim < t cnt - t err t tim = if timer cycle time t cnt = if counter cycle time t err = discrimination window (controlled by the ew registers) the if counter is only started by inlock information from the pll part. it is enabled by software (ifena). adjustment of the measurement sequence time the precision of the measurements is adjustable by controlling the discrimination window. this is adjustable by programming the control registers ew0 to ew2. the measurement time per cycle is adjustable by setting the register ifs0 - ifs2. adjust of the frequency value the center frequency of the discrimination window is adjustable by the control register cf0 to cf4.
TDA7511 18/41 1.8 i 2 c-bus interface the tda 7511 supports the i 2 c-bus protocol. this protocol defines any device that sends data onto the bus as a transmitter, and the receiving device as the receiver. the device that controls the transfer is a master and device being controlled is the slave. the master will always initiate data transfer and provide the clock to trans- mit or receive operations. data transition data transition on the sda line must only occur when the clock scl is low. sda transitions while scl is high will be interpreted as start or stop condition. start condition a start condition is defined by a high to low transition of the sda line while scl is at a stable high level. this "start" condition must precede any command and initiate a data transfer onto the bus. the tda 7511 continuously monitors the sda and scl lines for a valid start and will not response to any command if this condition has not been met. stop condition a stop condition is defined by a low to high transition of the sda while the scl line is at a stable high level. this condition terminates the communication between the devices and forces the bus-interface of the tda 7511 into the initial condition. acknowledge indicates a successful data transfer. the transmitter will release the bus after sending 8 bits of data. during the 9th clock cycle the receiver will pull the sda line to low level to indicate it receive the eight bits of data. data transfer during data transfer the tda 7511 samples the sda line on the leading edge of the scl clock. therefore, for proper device operation the sda line must be stable during the scl low to high transition. device addressing to start the communication between two devices, the bus master must initiate a start instruction sequence, fol- lowed by an eight bit word corresponding to the address of the device it is addressing. the most significant 6 bits of the slave address are the device type identifier. the tda 7511 device type is fixed as "110001". the next significant bit is used to address a particular device of the previous defined type connected to the bus. the state of the hardwired pin 41 defines the state of this address bit. so up to two devices could be connected on the same bus. when pin 41 is connected to vcc2 the address bit 1 is selected. in this case the am part doesnt work. otherwise the address bit 0 is selected (fm and am is working). therefor a double fm tuner concept is possible. the last bit of the start instruction defines the type of operation to be performed: - when set to "1", a read operation is selected - when set to "0", a write operation is selected the tda 7511 connected to the bus will compare their own hardwired address with the slave address being transmitted, after detecting a start condition. after this comparison, the tda 7511 will generate an "acknowl- edge" on the sda line and will do either a read or a write operation according to the state of r/w bit.
19/41 TDA7511 write operation following a start condition the master sends a slave address word with the r/w bit set to "0". the tda 7511 will generate an "acknowledge" after this first transmission and will wait for a second word (the word address field). this 8-bit address field provides an access to any of the 32 internal addresses. upon receipt of the word address the tda 7511 slave device will respond with an "acknowledge". at this time, all the following words transmitted to the tda 7511 will be considered as data. the internal address will be automatically incremented. after each word receipt the tda 7511 will answer with an "acknowledge". read operation if the master sends a slave address word with the r/w bit set to "1", the tda 7511 will transit one 8-bit data word. this data word includes the following informations: bit0 (iss filter, 1 = on, 0 = off) bit1 (iss filter bandwidth, 1 = 80khz, 0 = 120khz) bit2 (mpout,1 = multipath present, 0 = no multipath) bit3 (1 = pll is locked in , 0 = pll is locked out). bit4 (fieldstrength indicator, 1 = lower as softmute threshold, 0 = higher as softmute threshold) bit5 (adjacent channel indicator, 1 = adjacent channel present, 0 = no adjacent channel) bit6 (deviation indicator, 1 = strong overdeviation present, 0 = no strong overdeviation) bit7 (deviation indicator, 1 = overdeviation present, 0 = no overdeviation) 2 software specification the interface protocol comprises: - start condition (s) - chip address byte - subaddress byte - sequence of data (n bytes + acknowledge) - stop condition (p) figure 1. 99at0054 s 1 1 0 0 0 1 0 x msb lsb chip address ack s p i x acknowledge start stop pagemode r/w bit = = = = = ack t t i a4 a3 a2 a1 a0 msb lsb subaddress ack data msb lsb data1 - datan ack p
TDA7511 20/41 2.1 address organization 2.2 control register function table 1. function addr 7 6543210 chargepu mp 0 lpf currh b1 b0 a3 a2 a1 a0 lockdet 1 ldena d3 d2 d1 d0 amon test3 res2 pll counter 2 pc7 pc6 pc5 pc4 pc3 pc2 pc1 pc0 3 pc15 pc14 pc13 pc12 pc11 pc10 pc9 pc8 pll ref counter 4 rc7 rc6 rc5 rc4 rc3 rc2 rc1 rc0 5 rc15 rc14 rc13 rc12 rc11 rc10 rc9 rc8 tv1 6 tv011 tv010 tvr15 tvr14 tvr13 tvr12 tvr11 tvr10 tv2 7 tv021 tv020 tvr25 tvr24 tvr23 tvr22 tvr21 tvr20 ifc ctrl 1 8 tv013 tv012 tv023 tv022 ifena ew2 ew1 ew0 ifc ctrl 2 9 ifs2 ifs1 ifs0 cf4 cf3 cf2 cf1 cf0 if ref cnt1 10 irc7 irc6 irc5 irc4 irc3 irc2 irc1 irc0 if ref cnt2 11 ifcm1 ifcm0 irc13 irc12 irc11 irc10 irc9 irc8 if1/fmagc 12 - fmagc2 fmagc1 fmagc0 ifg21 ifg20 ifg11 ifg10 dem adj 13 dnb1 dnb0 dem5 dem4 dem3 dem2 dem1 dem0 quality ac 14 acnth1 acnth0 acwth2 acwth1 acwth0 acg acf iss30 quality mp 15 mpac appm2 appm1 mpth1 mpth0 mpg mpf mpoff qualitydev 16 - dth1 dth0 dwth1 dwth0 tdev2 tdev1 tdev0 qualityiss 17 aiss1 aiss0 tiss2 tiss1 tiss0 iss80 isson issctl am ctl1 18 dagc3 dagc2 dagc1 dagc0 amd1 amd0 amst amseek am ctl2 19 amss3 amss2 amss1 amss0 amagc3 amagc2 amagc1 amagc0 mute1 20 smcth1 smcth0 slope mena smd3 smd2 smd1 smd0 mute2 21 acm3 acm2 acm1 acm0 smth3 smth2 smth1 smth0 slider 22 - - sl5 sl4 sl3 sl2 sl1 sl0 tank adj 23 if1t3 if1t2 if1t1 if1t0 if2t3 if2t2 if2t1 if2t0 xtal adj 24 - - clksep xtal4 xtal3 xtal2 xtal1 xtal0 testcntrl 25 issin smsl sstsel isscoff demoff 450loff testou t testin test 26 - - - - - div2 div1 div0 test mode1 27 out7 out6 out5 out4 out3 out2 out1 out0 test mode2 28 - - tinmp tinac out11 out10 out9 out8 table 2. register name function a charge pump high current acf adjacent channel filter select acg adjacent channel filter gain acm threshold for startpoint adjacent channel mute acnth adjacent channel narrow band threshold acwth adjacent channel wide band threshold aiss iss filter fine adjust
21/41 TDA7511 amagc am wide band agc threshold amd am prescaler amon am-fm switch amseek switch time constant for am seek amss am seek stop threshold amst am stereo select appm application mode quality detection b charge pump low current cf center frequency if counter clksep clock separation (only for testing) currh set current high charge pump d inlock phase error and delay time for lock detector dagc am narrow band agc threshold dem demodulator offset demoff demodulator clock off (only for testing) dnb demodulator noise blanking div divider ratio for reference frequency (only for testing) dth deviation detector threshold for iss filter off dwth deviation detector threshold for iss filter narrow/wide ew frequency error window if counter fmagc fm agc threshold if1t fm/am mixer1 tank adjust if2t am mixer2 tank adjust ifcm if counter mode ifena if counter enable ifg if1 amplifier gain (10.7mhz) ifs if counter sampling time irc if reference counter isscoff iss filter clock off (only for testing) issctl iss filter control issin test input for iss filter isson iss filter on iss30 iss filter 30khz weather band iss80 iss filter narrow/mid switch ldena lock detector enable lpf loop filter input select mena softmute enable mpac adjacent channel control by multipath mpoff multipath control off mpf multipath filter frequency mpg multipath filter gain mpth multipath threshold out test output (only for testing) table 2. (continued) register name function
TDA7511 22/41 subaddress note: 1. t1, t2 used for testing, in application mode they have to be "0". pc counter for pll (vco frequency) rc reference counter pll res reservation sl s meter slider threshold slope softmute slope select smcth softmute capacitor threshold for iss on smd softmute depth threshold smsl s meter slope smth softmute startpoint threshold sstsel search stop select for continuous signal test3 testing pll/ifc (only for testing) testout switch fsw output to test output (only for testing) testin switch fsu input to test input (only for testing) tdev time constant for deviation detector tinac test input adjacent channel (only for testing) tinmp test input multipath(only for testing) tiss time constant for iss filter on/off tvr tuning voltage for prestage proportional referred to pll tvo tuning voltage offset for prestage xtal xtal frequency adjust 450loff 450khz limiter off (only for testing) table 3. msb lsb function t2 t1 i a4a3a2a1a0 0 0 0 0 0 charge pump control 0 0 0 0 1 pll lock detector ------ 1 1 1 0 0 test mode 2 0 page mode off 1 page mode enable table 2. (continued) register name function
23/41 TDA7511 2.3 data byte specification addr 0 charge pump control addr 1 pll lock detector table 4. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0 0 0 0 high current = 0ma 0 0 0 1 high current = 0.5ma 0 0 1 0 high current = 1ma 0 0 1 1 high current = 1.5ma ----- 1 1 1 1 high current = 7.5ma 00 low current = 0 m a 01 low current = 50 m a 10 low current = 100 m a 11 low current = 150 m a 0 select low current 1 select high current 0 select lpfm 1 select lpam table 5. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0 0 not used, have to be 0, d1 only for testing 0 select fm mode 1 select am mode 0 0 pd phase difference threshold 10ns 0 1 20ns 1 0 30ns 1 1 40ns 0 0 not valid 0 1 activation delay 4 x 1/f ref 10 6 x 1/f ref 11 8 x 1/f ref 0 lock detector doesn't control charge pump 1 lock detector controls charge pump
TDA7511 24/41 addr 2 pll counter 1 (lsb) addr 3 pll counter 2 (msb) note: 1. swallow mode: f vco /f syn = lsb + msb + 32 addr 4 pll reference counter 1 (lsb) table 6. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 00000000lsb = 0 00000001lsb = 1 00000010lsb = 2 --------- 11111100lsb = 252 11111101lsb = 253 11111110lsb = 254 11111111lsb = 255 table 7. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 00000000msb = 0 00000001msb = 256 00000010msb = 512 --------- 1 1 1 1 1 1 0 0 msb = 64768 1 1 1 1 1 1 0 1 msb = 65024 1 1 1 1 1 1 1 0 msb = 65280 1 1 1 1 1 1 1 1 msb = 65536 table 8. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 00000000lsb = 0 00000001lsb = 1 00000010lsb = 2 --------- 11111100lsb = 252 11111101lsb = 253 11111110lsb = 254 11111111lsb = 255
25/41 TDA7511 addr 5 pll reference counter 2 (msb) note: 1. f osc /f ref = lsb + msb + 1 addr 6, addr7, addr 8 tv1,2 (proportional and offset control referred to tuning voltage v28) note: 1. tv1,2 = v28 + v28 * tvr/128 + tvo * 50mv tvr: -31, -30, ... 0 ... 30, 31 tvo: -7, -6, ... 0 ... 6, 7 table 9. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 00000000msb = 0 00000001msb = 256 00000010msb = 512 --------- 1 1 1 1 1 1 0 0 msb = 64768 1 1 1 1 1 1 0 1 msb = 65024 1 1 1 1 1 1 1 0 msb = 65280 1 1 1 1 1 1 1 1 msb = 65536 table 10. addr8 addr6 function tv1 d7 d6 d7 d6 d5 d4 d3 d2 d1 d0 addr8 addr7 function tv2 d5 d4 d7 d6 d5 d4 d3 d2 d1 d0 000000tvr = 0 000001tvr = -1 000010tvr = -2 ------- -- 011111tvr = -31 100001tvr = +1 100010tvr = +2 ----------- 111111tvr = +31 0000 tvo = 0 0001 tvo = -1 0010 tvo = -2 ----------- 0111 tvo = -7 1001 tvo = +1 1010 tvo = +2 ----- ----- 1111 tvo = +7
TDA7511 26/41 addr 8 if counter control 1 addr 9 if counter control 2 table 11. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 000not valid 001not valid 010not valid 011 d f = 6.25khz (fm)1khz (am upc) 100 d f = 12.5khz (fm) 2khz (am upc) 101 d f = 25khz (fm) 4khz (am upc) 110 d f = 50khz (fm) 8khz (am upc) 111 d f = 100khz (fm)16khz (am upc) 0 if counter disable / stand by 1 if counter enable table 12. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 00000f center = 10.60625mhz (fm)10.689mhz (am upc) 00001f center = 10.61250mhz (fm)10.690mhz (am upc) --------- 01010f center = 10.66875mhz (fm)10.699mhz (am upc) 01011f center = 10.67500mhz (fm)10.700mhz (am upc) 01100f center = 10.68125mhz (fm)10.701mhz (am upc) 01101f center = 10.68750mhz (fm)10.702mhz (am upc) 01110f center = 10.69375mhz (fm)10.703mhz (am upc) 01111f center = 10.70000mhz (fm)10.704mhz (am upc) 10000f center = 10.70625mhz (fm)10.705mhz (am upc) 10001f center = 10.71250mhz (fm)10.706mhz (am upc) --------- 11111f center = 10.80000mhz (fm)10.720mhz (am upc) 000 t sample = 20.48ms (fm)128ms (am upc) 001 t sample = 10.24ms (fm)64ms (am upc) 010 t sample = 5.12ms (fm)32ms (am upc) 011 t sample = 2.56ms (fm)16ms (am upc) 100 t sample = 1.28ms (fm)8ms (am upc) 101 t sample = 640 m s (fm)4ms (am upc) 110 t sample = 320 m s (fm)2ms (am upc) 111 t sample = 160 m s (fm)1ms (am upc)
27/41 TDA7511 addr 10 if counter reference (lsb) addr 11 if counter reference (msb) and if counter mode select note: 1. f osc /f tim = lsb + msb + 1 table 13. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 00000000lsb = 0 00000001lsb = 1 00000010lsb = 2 --------- 11111100lsb = 252 11111101lsb = 253 11111110lsb = 254 11111111lsb = 255 table 14. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 000000msb = 0 0 0 0 0 0 1 msb = 256 0 0 0 0 1 0 msb = 512 ------- 1 1 1 1 0 1 msb = 15616 1 1 1 1 1 0 msb = 15872 1 1 1 1 1 1 msb = 16128 0 0 not valid 0 1 if counter fm mode 1 0 not valid 1 1 if counter am upconversion mode
TDA7511 28/41 addr 12 if 1 and fm agc addr 13 demodulator fine adjust table 15. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0 0 if1 gain1 9db 0 1 if1 gain1 11db 1 0 if1 gain1 13db 1 1 if1 gain1 15db 0 0 if1 gain2 9db 0 1 if1 gain2 11db 1 0 if1 gain2 13db 1 1 if1 gain2 15db 000 agc threshold 80db m v 001 agc threshold 82db m v 010 agc threshold 84db m v 011 agc threshold 86db m v 100 agc threshold 88db m v 101 agc threshold 90db m v 110 agc threshold 92db m v 1 1 1 keying agc off 0 has to be 0 table 16. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0000000mv 000001+6mv 000010+12mv ------- 0 1 1 1 1 1 +186mv 1000000mv 100001-6mv 100010-12mv ------- 1 1 1 1 1 1 -186mv 1 1 have to be 1
29/41 TDA7511 addr 14 quality detection adjacent channel addr 15 quality detection multipath table 17. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 1 iss filter 30khz onfor weather band 0 ac highpass frequency 100khz 1 ac bandpass frequency 100khz 0 ac gain 32db 1 ac gain 38db 0 0 0 ac wide band threshold 0.25v 0 0 1 ac wide band threshold 0.35v 0 1 0 ac wide band threshold 0.45v --- - 1 1 1 ac wide band threshold 0.95v 0 0 ac narrow band threshold 0.0v 0 1 ac narrow band threshold 0.1v 1 0 ac narrow band threshold 0.2v 1 1 ac narrow band threshold 0.3v table 18. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0 multipath control on 1 multipath control off 0 mp bandpass frequency 19khz 1 mp bandpass frequency 31khz 0 mp gain 12db 1 mp gain 23db 0 0 mp threshold 0.50v 0 1 mp threshold 0.75v 1 0 mp threshold 1.00v 1 1 mp threshold 1.25v 0 0 application mode 1 0 1 application mode 2 0 multipath eliminates ac 1 multipath eliminates ac and ac+
TDA7511 30/41 addr 16 quality deviation detection addr 17 quality iss filter table 19. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 000 charge current 34 ma, discharge current 6 ma 001 charge current 32 ma, discharge current 8 ma 010 charge current 30 ma, discharge current 10 ma 011 charge current 28 ma, discharge current 12 ma ---- 111 charge current 20 ma, discharge current 20 ma 0 0 dev threshold for iss narrow/wide 30khz 0 1 dev threshold for iss narrow/wide 45khz 1 0 dev threshold for iss narrow/wide 60khz 1 1 dev threshold for iss narrow/wide 75khz 0 0 dev threshold for iss filter off ratio 1 0 1 dev threshold for iss filter off ratio 1.3 1 0 dev threshold for iss filter off ratio 1.4 1 1 dev threshold for iss filter off ratio 1.5 0 has to be 0 table 20. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0 iss filter control on 1 iss filter control off 0 switch iss filter off 1 switch iss filter on 0 switch iss filter 120khz 1 switch iss filter 80khz 000 discharge current1 m a, charge current mid 74 ma narrow124 ma 001 discharge current3 m a, charge current mid 72 ma narrow122 ma 010 discharge current5 m a, charge current mid 70 ma narrow120 ma 011 discharge current7 m a, charge current mid 68 ma narrow118 ma --- - 111 discharge current15 m a,charge current mid 60 ma narrow110 ma 0 0 iss filter fine adjust -20khz 0 1 iss filter fine adjust -10khz 1 0 iss filter fine adjust 0khz 1 1 iss filter fine adjust +10khz
31/41 TDA7511 addr 18 am control1 addr 19 am control2 table 21. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0 normal agc time constant 1 short time constant for am seek stop 0 multipath information available fm 1 am stereo output available 0 0 prescaler ratio 10 0 1 prescaler ratio 8 1 0 prescaler ratio 6 1 1 prescaler ratio 4 0000 narrow band agc threshold 74.4db m v 0001 narrow band agc threshold 78.8db m v 0010 narrow band agc threshold 80.0db m v 0011 narrow band agc threshold 80.7db m v 0100 narrow band agc threshold 53.2db m v 0101 narrow band agc threshold 77.1db m v 0110 narrow band agc threshold 78.5db m v 0111 narrow band agc threshold 79.4db m v 1000 narrow band agc threshold 42.7db m v 1001 narrow band agc threshold 65.8db m v 1010 narrow band agc threshold 77.6db m v 1011 narrow band agc threshold 78.5db m v 1100 narrow band agc threshold 32.6db m v 1101 narrow band agc threshold 55.0db m v 1110 narrow band agc threshold 73.3db m v 1111 narrow band agc threshold 77.6db m v table 22. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0000 agc threshold 82.0db m v 80.1db m v 0001 agc threshold 85.4db m v 83.4db m v 0010 agc threshold 87.5db m v 85.5db m v 0011 agc threshold 89.2db m v 87.2db m v 0100 agc threshold 90.6db m v 88.6db m v 0101 agc threshold 91.9db m v 89.8db m v 0110 agc threshold 92.9db m v 90.8db m v 0111 agc threshold 93.8db m v 91.8db m v 1000 agc threshold 94.6db m v 92.6db m v 1001 agc threshold 95.4db m v 93.3db m v 1010 agc threshold 96.1db m v 94.0db m v
TDA7511 32/41 addr 20 softmute control 1 1011 agc threshold 96.7db m v 94.6db m v 1100 agc threshold 97.3db m v 95.2db m v 1101 agc threshold 97.8db m v 95.7db m v 1110 agc threshold 98.4db m v 96.3db m v 1111 agc threshold 98.8db m v 96.8db m v 0000 seek stop threshold 20.3db m v 0001 seek stop threshold 20.8db m v 0010 seek stop threshold 21.3db m v 0011 seek stop threshold 22.0db m v 0100 seek stop threshold 22.8db m v 0101 seek stop threshold 23.7db m v 0110 seek stop threshold 24.7db m v 0111 seek stop threshold 25.9db m v 1000 seek stop threshold 27.0db m v 1001 seek stop threshold 28.6db m v 1010 seek stop threshold 30.4db m v 1011 seek stop threshold 32.5db m v 1100 seek stop threshold 35.2db m v 1101 seek stop threshold 37.6db m v 1110 seek stop threshold 40.2db m v 1111 seek stop threshold 43.0db m v table 23. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0 0 0 0 mute depth 0 in application 18db 0 0 0 1 mute depth 1 in application 20db 0 0 1 0 mute depth 2 in application 22db 0 0 1 1 mute depth 3 in application 24db - - - - - (logarithmically behaviour) 1 1 1 1 mute depth 15 in application 36db 0 mute disable 1 mute enable 0 sharp slope 1 smooth slope 0 0 function off 0 1 mute depth threshold for iss filter on 2db 1 0 mute depth threshold for iss filter on 1db 1 1 mute depth threshold for iss filter on 0.2db table 22. (continued) msb lsb function d7 d6 d5 d4 d3 d2 d1 d0
33/41 TDA7511 addr 21 softmute control 2 addr 22 s-meter slider table 24. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0000 startpoint mute 0 in application 3db m v 0001 startpoint mute 1 in application 4db m v 0010 startpoint mute 2 in application 5db m v 0100 startpoint mute 3 in application 6db m v ----- 1111 startpoint mute 15 in application 18db m v 0 0 0 0 ac mute threshold 60mv 0 0 0 1 ac mute threshold 80mv 0 0 1 1 ac mute threshold 100mv ---0 - 1 0 0 0 ac mute threshold 220mv 1 1 1 1 ac mute off table 25. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0 0 0 0 0 0 s meter offset 0mv 0 0 0 0 0 1 s meter offset -58mv 0 0 0 0 1 0 s meter offset -116mv ------- 0 1 1 1 1 1 s meter offset -1798mv 1 0 0 0 0 0 s meter offset 0mv 1 0 0 0 0 1 s meter offset +58mv 1 0 0 0 1 0 s meter offset +116mv ------- 1 1 1 1 1 1 s meter offset +1798mv x x not used
TDA7511 34/41 addr 23 tank adjust addr 24 xtal adjust addr 25 test control table 26. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0 0 0 0 450khz 0pf 0 0 0 1 450khz 1.6pf 0 0 1 0 450khz 3.2pf 0 0 1 1 450khz 4.8pf ----- 1 1 1 1 450khz 24pf 0 0 0 0 10.7mhz 0pf 0 0 0 1 10.7mhz 0.55pf 0 0 1 0 10.7mhz 1.1pf 0 0 1 1 10.7mhz 1.65pf ---- - 1 1 1 1 10.7mhz 8.25pf table 27. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 00000c load 0pf 00001c load 0.625pf 00010c load 1.25pf 00011c load 1.875pf 00100c load 2.5pf ------ 11111c load 19.4pf 0 only for testing has to be 0 x x not used table 28. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0 0 0 0 0 only for testing (bits have to be 0) 0 amif select 1 permanent search stop select for am 0 s meter slope 1v/decade 1 s meter slope 1.5v/decade 0 only for testing (has to be 0)
35/41 TDA7511 addr 26 test addr 27 test mode1 addr 28 test mode2 table 29. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 x x x x x 1 1 0 only for testing (bits have to be set) table 30. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 0 0 0 0 0 0 0 0 only for testing (bits have to be set) table 31. msb lsb function d7 d6 d5 d4 d3 d2 d1 d0 x x 0 0 0 0 0 0 only for testing (bits have to be set)
TDA7511 36/41 appendix figure 2. figure 3. 10.7 mhz limiter s-meter pin46 fmmix2in1 pin14 fsu iss mpx dem max 40 m a 5 m a 1...15 m a tdev dc 3v devtc pin20 + - + - + dwth dth mute ac mute detector logic 17<2> 16<7> 17<1> inton high 15<5> 15<6> int80 dev dev+ sm ac ac+ + - smcth mute tc + pin13 adjch ac detector + - + - + acwth acnth ac + - mpth mp mp detector pin34 amst/mp y1 16<7> y2 17<0> y3 15<0> 50 m a 75 m a + - 5v + - 2.5v 1...15 m a tiss isstc pin15 + - + - 2v 4v 33nf 12k w pin37 mpx/afam pin42 mutetc attack current 50 m a decay current 2.5 m a pin35 fsw acwth < ac acwth + acnth < ac mpth < mp y1 1 1 x y2 0 1 x y3 x x 1 v20 > dwth v20 > dth + dwth dev 1 1 dev+ 0 1 v15 > 2v v15 > 4v ac 1 1 ac+ 0 1 - all switches are drawn for function "off" - software explanation: 16<7> means address 16 and data d7 00at0006 + 12.5 m a pin6 pin5 i sink max 1.25ma fmmosdr fmpindr 0...10db + - keying agc off (= 0db) fmagc narrow band range internal unweighted fieldstrength pin11 fmrfagcin 80dbu pin11 fmifagcin 82...92dbu mid band range wide band range 00at0007
37/41 TDA7511 block diagram quality detection principle part list (application- and measurment circuit) table 32. signal low high ac no adjacent channel adjacent channel present ac+ no strong adjacent channel adjacent channel higher as ac sm fieldstrength higher as softmute threshold fieldstrength lower as softmute threshold dev deviation lower as threshold dwth deviation higher as threshold dwth dev+ deviation lower as threshold dth*dwth deviation higher as threshold dth*dwth inton iss filter off by logic (wide) iss filter on by logic int80 iss filter 120khz (mid) iss filter 80khz (narrow) table 33. input signals mode1 mode2 ac ac+ sm dev dev+ inton int80 function inton int80 function 0000000wide00wide 0001000wide00wide 0001100wide00wide 0 0 1 0 0 1 1 narrow 1 1 narrow 0011000wide10mid 0011100wide00wide 1 0 0 0 0 1 1 narrow 1 0 mid 1 1 0 0 0 1 1 narrow 1 1 narrow 1001010mid10mid 1 1 0 1 1 1 0 mid 1 1 narrow 1 0 1 0 0 1 1 narrow 1 1 narrow 1 1 1 0 0 1 1 narrow 1 1 narrow 1011010mid10mid 1 1 1 1 0 1 0 mid 1 1 narrow 1011110mid10mid 1 1 1 1 1 1 0 mid 1 1 narrow table 34. item description f1 toko 7kl 600ens-9132nk f2 toko 7kl 600ens-9390aq f3 toko 7kl v600ens-9469bs f4 toko 7psg 628ac-5022n f5 toko pgl 5pglc-5103n l1,l5 siemens simid03 b82432 1mh l2,l4 toko fslu 2520-680 68h l3 toko fslu 2520-150 15h cf1,cf2 murata sfe10.7ms3a10-a 180khz or (toko cfsk107m3-ae-20x) cf3 murata sfe10.7mja10-a 150khz or (toko cfsk107m4-ae-20x) cf4 murata sfps 450h 6khz or (toko arlfc450t) t1,t2 componex b4f 617pt-1026 d1,d3,d5 toko kv1410 d2,d4 toshiba 1sv172 q1 toshiba 3sk126 q2 toshiba hn3g01j
TDA7511 38/41 3 application circui figure 4. f1 ampindr vccvco v ccif v ccam r 11 1k w c 5 68pf l1 1mh c 12 100nf l2 68 m h l4 68 m h r 3 10k w q2 r 10 910k w d4 1sv172 c 3 4.7nf l3 15 m h amant c 11 10nf c 10 1 m f c 13 100pf c 9 100nf c6 2.2 m f r 9 2.2k w c 36 22nf 2 ammix1in1 c 37 3 amrfagcin c 35 22nf 4 amrfagcout r 8 4.7k w 5 fmpindr fmmosdr 6 fmmix1in1 78 fmmix1in2 9 tv1 10 11 fmrfagcin tv2 12 adjch 13 14 fsu isstc 15 16 3 2 54 d3 kv1410 c 33 3.3pf f2 22 nf c 65 5.6 pf c 66 5.6 pf c 67 10 pf r1 1k w r 25 56k w r 26 330 w c 26 10nf c 49 1 m f c 2 10nf r 27 100k w r 28 100k w c 50 100nf c 1 10nf d2 1sv172 c 53 3.3pf c 31 10pf d1 kv1410 r 30 56k w 45 c 14 3pf r 31 56k w c 33 47pf c 15 120pf r 17 100k w 25 17 45 kv1410 r 21 5.6k w c 43 3.3pf f3 c 44 22 pf c 45 15pf c 16 68pf c 42 22nf* c x c 37 100 nf gndvco 18 vcob 19 vcoe devtc 20 21 xtald xtalg 22 24 sstop x1 12.25 mhz gndvcc3 23 sda 26 scl vcc3 27 28 lpout vref2 29 c 40 47 m f r 20 680 w c 38 100 nf r 32 10 w c 39 10 m f c 41 6.8nf r 22 10 w c 47 100nf c 67 33nf 30 c 34 10nf c 33 2.2nf c 36 6.8nf r 18 56k w c 35 1nf r 19 8.2k w 31 32 lpam lpfm lphc 1 ammix1in2 3 2 1 c 7 1 m f 64 63 amrfagctc mix1out1 62 61 mix1out2 fmifagcin 60 59 gndif1amp amif1in 58 57 fmamp1in ammix2out1 56 55 ammix2out2 fmamp1out 54 53 fmif1ref fmamp2in1 52 51 vcc2 fmamp2out 50 gndvcc2 c 58 100pf f4 r 33 12k w 4 5 cf1 3 2 1 4 5 f5 c 17 22nf 33 gndvcc1 amst/mp 34 35 fsw vcc1 36 37 mpx/afam amifref amifbpp amagc2tc amdetc mute tc 43 amif2in fmdemc 44 45 fmmix2in1 46 47 gnddem 48 vref1 fmmix2in2 c 30 100 nf c 31 47 m f r 16 100 w c 61 120 pf l5 1 mh c 29 10nf c 28 22 m f c 27 10 m f c 32 3.9 nf c 26 470 nf c 24 22nf c 18 100nf c 19 100nf 49 c 20 47 m f c 21 22 m f r 15 4.7 w c 22 22 m f c 60 100nf cf2 cf3 cf4 spts450 gndvcc3 sstop sda scl vcc3 gndvco vccvco fsu adjch rfgnd fmant r 29 27 w v ccfm gndvcc1 amst-mp fsw vcc1 gndvcc2 vcc2 gndifamp gndrf mpx/afam r 12 27 w 1 c 54 47pf 1 99at0056 tda 7511 r 13 27 w r 23 56k w q1 c 25 470 nf 39 40 41 42 38 r 14 4.7 w 2.2 k w 330nf 100nf
39/41 TDA7511 4 measurement circuit figure 5. c 2 100nf fmrfagcin am-rfin vccvco ammix1in1 amrfagcin amrfagcout fmpindr fmmosdr fmmix1in1 fmmix1in2 tv1 fmrfagcin tv2 adjch fsu swbpftc 25 17 gndvco 18 vcob 19 vcoe devtc 20 21 xtald xtalg 22 24 sstop gndvcc3 23 sda 26 scl vcc3 27 28 lpout vref2 29 30 31 lpam lpfm lphc ammix1in2 64 63 62 61 mix1out2 60 59 58 57 56 55 54 53 52 51 50 gndvcc1 amst/mp fsw vcc1 mpx/afam amifref amifbpp amagc2tc amdetc mutetc amif2in fmdemc fmmix2in1 gnddem vref1 fmmix2in2 tda 7511 gndrf 32 c 21 10nf c 20 10nf c 13 1nf r 9 4.7k w r 2 50 w bnc r 12 91 w r 11 91 w 123 c 19 1nf c 27 22pf pj2 bnc 64 t1 617pt-1026 r 1 4 .7k w c 15 1 m f fm-mos driver fm-pin driver am-rf-agcout tuning voltage 1 50 w r 3 c 53 1nf tuning voltage 2 adjacent channel out unweighted fieldstrength c 53 33nf* c 7 22 m f c 3 100nf c 4 22nf c 11 470 nf c 9 470 nf c 10 3.9nf c 12 10 m f c 57 120 pf l5 1mh c 58 10nf c 63 22 m f r 15 1 00w c 32 100nf 47 m f c 42 cf4 sfps450h 49 gndvcc2 fmamp2out vcc2 fmamp2in1 fmif1ref fmamp1out cf3 sfe10.7 mja10 cf2 sfe10.7 ms3 c 39 22nf ammix2out2 ammix2out1 cf1 sfe10.7ms3 fmamp1in2 amif1in 12k w r 14 c 37 100pf fmifagcin gndifamp mix1out1 amrfagctc ampindr c 45 1 m f 1 2 3 4 6 t2 617pt- 1026 c 1 100nf c 5 47 m f r 22 4 .7 w 321 45 f5 c 6 22 m f r 23 4 .7 w p12 p13 p14 mpx/af fsw amst/mp d5 kv1410 c 26 3.3pf f3 4 6 c 24 15pf c 25 68pf c 34 100nf 10 w r 13 8.2k w r 17 100k w r 16 c 31 10nf c 23 2.2nf 56k w r 18 c 43 1nf c 29 6.8nf c 22 10nf c 41 47 m f 47 w r 19 c 30 100nf c 33 10 m f r 20 6 80 w r 21 5 .6k w c 35 6.8nf vcc p16 p17 p1 p3 p4 p5 p6 p7 p8 c 40 100nf am-pin driver p2 r 6 2 7 w p15 vccvco x1 10.25mhz c 28 22nf* p9 sstop sda scl fm-rfin pj3 bnc pj1 600ens_9469n c 36 1nf 99at0057 2 3 4 5 6 7 8 9 10111213141516 1 33 34 35 36 37 43 44 45 46 47 48 39 40 41 42 38 100nf
TDA7511 40/41 tqfp64 dim. mm inch min. typ. max. min. typ. max. a 1.60 0.063 a1 0.05 0.15 0.002 0.006 a2 1.35 1.40 1.45 0.053 0.055 0.057 b 0.18 0.23 0.28 0.007 0.009 0.011 c 0.12 0.16 0.20 0.0047 0.0063 0.0079 d 12.00 0.472 d1 10.00 0.394 d3 7.50 0.295 e 0.50 0.0197 e 12.00 0.472 e1 10.00 0.394 e3 7.50 0.295 l 0.40 0.60 0.75 0.0157 0.0236 0.0295 l1 1.00 0.0393 k 0 (min.), 7 (max.) a a2 a1 b c 16 17 32 33 48 49 64 e3 d3 e1 e d1 d e 1 k b tqfp64 l l1 seating plane 0.10mm outline and mechanical data
information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicati on are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectro nics. the st logo is a registered trademark of stmicroelectronics ? 2001 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan -malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states. http://www.st.com 41/41 TDA7511

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