telefunken semiconductors TDA4480-D rev. a1: 14.09.1995 1 (8) multi standard quasi parallel-sound processor for tv-sets technology: bipolar features high signal sensitivity simple filter configuration and few external components processing of two carrier stereo signals low intercarrier distortions af output level matched to simavelec condition alignment free am demodulator for the standard l vco controlled mixer stage converts intercarrier fre- quencies of different standards into a preferred sound if optimum tuning characteristic esd protected case: dip20 figure 1. block diagram
telefunken semiconductors TDA4480-D rev. a1: 14.09.1995 2 (8) pin description pin symbol function 12 vision-if-carrier input 3 intercarrier input 5.74 mhz 4 agc time constant 5 intercarrier output 5.74 mhz 6 standard switch 7 af output 1 8-9 phase tank circuit 5.74 mhz 10 vc0 tank circuit pin symbol function 11 ground 12-13 phase tank circuit 5.5 mhz 14 af output 2 15 intercarrier output 5.5 mhz 16 supply voltage 17 intercarrier input 5.5 mhz 18-19 sound-if-carrier input 20 nc circuit description the integrated circuit allows the high quality processing of sound carrier for different tv standards. the circuit re- quires separate vision and audio carrier inputs. it delivers the output audio signal for mono, two channels or stereo applications. audio carrier signal (simple or double carrier, fm and am) is applied via three stage agc controlled broad band amplifier which delivers regulated output signal for two mixing stages. one mixer works for am-demodula- tion and agc-function whereas the second mixer produces the sound intercarrier if-frequencies (5.5/5.74 mhz). vision carrier signal for the intercarrier generation is de- livered from the demodulator tank of the video if circuit (tda 4439, tda 4453). it is then matched via a limiter stage to the fm intercarrier mixer. fm-sound-if-carrier reaches the quadrature demodulator via the selection cir- cuit and the following limiter amplifier. the final audio signal is supplied to the low ohmic output (pins 7 and 14) with low pass filter character. there is a switchable converter for different audio stan- dards (4.5, 6.00 and 6.5 mhz), which mixes the sound if-signal properly e.g. at 5.5 mhz. the vco (pin 10) must be controlled across the sound output (pin 7) which includes afc-function. sound signal at the am-modulation is introduced via standard switch in the first sound channel, whereas the in- tercarrier, converter section and both fm demodulators are switched off. in case of sound if converter operation, the second sound channel and the am-section are switched off. the standard mode is controlled by a tri- state signal on pin 6. absolute maximum ratings reference point pin 11, unless otherwise specified. parameters symbol value unit supply voltage pin 16 v s 10 to 13.5 v supply current pin 16 i s 80 ma external voltages pin 6
v ext v s 6 v power dissipation (in soldered position) p tot 1 w junction temperature t j 125 c ambient temperature range t amb 25 to +70 c storage temperature range t stg 25 to +125 c thermal resistance parameters symbol value unit junction ambient r thja 60 k/w
telefunken semiconductors TDA4480-D rev. a1: 14.09.1995 3 (8) electrical characteristics v s = 12 v, t amb = 25 c, reference point pin 11, f pc = 38.9 mhz, f sc1 = 33.4 mhz, f sc2 = 33.1578 mhz, sc1/sc2 = 7 db, unless otherwise specified parameters test conditions / pins symbol min. typ. max. unit supply voltage pin 16 v s 10 13.5 v supply current fm-operation pin 16 am-operation i s 65 40 ma dc output voltage pins 7 and 14 v 0 3.5 v standard switching voltage standard b/g pin 6 standard l converter operation v 1.7 0 3.5 2.2 2.7 1.5 v s v standard switching current v 6 5 v pin 6 i 20 a picture carrier input voltage pin 1 2 v 5 10 20 mv min. sound carrier input voltage sc1 5.5-mhz output signal 3 db pin 18 19 v 50 v max. sound carrier input voltage sc1 pin 18 19 v 100 mv agc range 65 db audio output voltage f mod = 1khz, v 18-19 = 10 mv fm: deviation = 27 khz pin 7, 14 am: m = 54 % pin 7 v 500 500 mv audio voltage difference between both outputs pin 7,14 v 1 db harmonic distortion: fm-operation f mod = 1 khz pin 7, 14 fm-deviation = 30 khz d 0.5 % harmonic distortion: am-operation f mod = 1 khz, m = 80 %, v 18-19 = 10 mv pin 7 d 1.5 3.0 % minimum output load pin 7, 14 r 3 k signal to noise ratio (standard b/g) according to ccir 468-2 specifications: sc1: v 18-19 = 10 mv; pc: v 1-2 = 10 mv prelimited demodulator, picture carrier signal from tda 4453, reference signal: f mod = 1 khz, fm-deviation = 30 khz black burst 1. channel/2. channel 1) pin 7, 14 (s+n)/n 62/60 db grid test signal 1. channel/2. channel 1) pin 7, 14 (s+n)/n 50/48 db converter pin 10 dc voltage v 6 3.5 v v 10 2.7 v tuning range f 9 13 mhz input resistance r i 100 k input capacity c i 12 pf 1) standard b/g if-modulated fbas-signal
telefunken semiconductors TDA4480-D rev. a1: 14.09.1995 4 (8) pin 1, 2 if-input vision carrier pin 3 (17) intercarrier input pin 3: 5.74 mhz pin 17: 5.5 mhz
telefunken semiconductors TDA4480-D rev. a1: 14.09.1995 5 (8) pin 4 agc time constant pin 5 (15) intercarrier output pin 5: 5.74 mhz pin 15: 5.5 mhz pin 6 standard switch
telefunken semiconductors TDA4480-D rev. a1: 14.09.1995 6 (8) pin 7 af-output am/fm (channel 1, 5.5 mhz) pin 8, 9 (12, 13) phase tank circuit pin 8, 9 : 5.74 mhz pin 12, 13 : 5.5 mhz pin 10 vco tank circuit
telefunken semiconductors TDA4480-D rev. a1: 14.09.1995 7 (8) pin 14 af-output fm (channel 2, 5.74 mhz) pin 18, 19 if-input sound carrier dimensions in mm package:dip 20 95 9732
telefunken semiconductors TDA4480-D rev. a1: 14.09.1995 8 (8) ozone depleting substances policy statement it is the policy of temic telefunken microelectronic gmbh to 1. meet all present and future national and international statutory requirements. 2. regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. it is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances ( odss). the montreal protocol ( 1987) and its london amendments ( 1990) intend to severely restrict the use of odss and forbid their use within the next ten years. various national and international initiatives are pressing for an earlier ban on these substances. temic telefunken microelectronic gmbh semiconductor division has been able to use its policy of continuous improvements to eliminate the use of odss listed in the following documents. 1. annex a, b and list of transitional substances of the montreal protocol and the london amendments respectively 2 . class i and ii ozone depleting substances in the clean air act amendments of 1990 by the environmental protection agency ( epa ) in the usa 3. council decision 88/540/eec and 91/690/eec annex a, b and c ( transitional substances ) respectively. temic can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. we reserve the right to make changes to improve technical design and may do so without further notice . parameters can vary in different applications. all operating parameters must be validated for each customer application by the customer. should the buyer use temic products for any unintended or unauthorized application, the buyer shall indemnify temic against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. temic telefunken microelectronic gmbh, p.o.b. 3535, d-74025 heilbronn, germany telephone: 49 ( 0 ) 7131 67 2831, fax number: 49 ( 0 ) 7131 67 2423
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