View M02097G-11_8624004.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

02097-dsh-001-c mindspeed technologies ? november 2006 preliiminary information/mindspeed proprietary and confidential preliminary information m02097-11/-21 3.3/5v led driver / limiting amplifier for operation to 500 mbps preliminary information this document contains information on a new pr oduct. the parametric information, although not fully characterized, is the resu lt of testing initial devices. applications ? 155mbps lan atm transceivers escon receivers fast ethernet/fddi multimode led transmitters sfp transceivers ieee 1394 s100, s200 and s400 transceivers features high speed operation; suitable fo r applications to 500 mbps. 200 ps typical rise/fall time into 5 ? . programmable modulation current to 120 ma integrated power supply switch for redundant shutdown under a fault condition the m02097 is an integrated led driver and limiting amplifier for applications to 500 mbps. the led driver modulation output can be ac or dc coupled to an led. the device can operate from a 3.3v or 5v supply. the m02097 includes monitors for bias and modulation curr ent. integrated safety circuitry provides latched bias and modulation current shutdown if a fault condition is detected and provides an internal v cc switch. the limiting amplifier also includes a programmable signal-level detector, allowing the user to set thresholds at which the logic outputs are enabled. the m02097-11 features a pecl los-st output while the m02097-21 features a cmos (external pull-up required) los-st output. pecl outputs are available on the limiting amplifier. configuration logic provides flexibility in setting data path polarity, safety lo gic configuration, and los behavior. m02097 block diagram v cc 3t sv cc out+ out- gnd 0 pb out input buffer d in - d in + tx disable fail dis reset v cc t gnd 3.3v regulator with bypass to safety logic to safety logic v cc v cc3 laser driver modset pbset led pre-bias control threshold setting circuit biasing rxoutp rxoutm rssi los-st rxinm iref rxinp v cc r stset offset cancel dcr_disable limiting amplifier scb safety circuitry with latched fault output buffer tx_polarity rx_polarity config_2 tx_polarity rx_polarity config_3 config_1 dcr_disable c pb tc slope tc start los-to-jam config_4 los-to-jam los-st_sel los-st_sel los level detect comparator v cc 3r configuration logic modulation control vttx 4k ? 4k ? vttr 2k ? 2k ? output buffer regulator with bypass cmos/ttl (- 21 ) pecl (-11) pecl features (con?t) temperature compensation for modulation current pre-bias adjustment to improve led edge speed sfp compliant safety circuitry (configurable) 6mv input limiting amp sensitivity at 500 mbps. pecl limiting amplifier outputs limiting amplifier includes integrat ed dc offset ca ncellation circuit polarity control for both the driver and limiting amplifier data paths operates with 3.3v or 5v supply with an internal auto-sensing regulator that enables with 5v su pplies and is bypassed with 3.3v supplies powers 3.3v rosas from its receiv er regulator output enabling true 3.3/5v designs using a ll 3.3v mindspeed tias
02097-dsh-001-c mindspeed technologies ? ii preliiminary information/mindspeed proprietary and confidential preliminary information m02097 622 mbps led driver eye diagram m02097 pin configuration ordering information part number package operating temperature M02097G-11* qfn32 ?40 c to 95 c m02097g-21* qfn32 ?40 c to 95 c * the letter ?g? designator after the part number indicates that the d evice is rohs-compliant. refer to www.mindspeed.com for a dditional information. revision history revision level date asic revision description c preliminary november 2006 -11/-21 reflect current device pinout. b advance august 2006 -11/-21 update several specifications based on initial device evaluation. a advance june 2006 na initial release. gnd rxinp rxinm config1 config2 config3 config4 los-st i ref c pb v cc 3t pb set nc nc mod se t dis fail rxoutm rxoutp v cc r v cc t tc slope tc start dinp dinm v cc 3r st set sv cc outn gndo pb out nc 1 2 3 4 5 7 6 8 12 11 10 916 15 14 13 20 19 18 17 24 23 22 21 28 27 26 25 32 31 30 29 outp
02097-dsh-001-c mindspeed technologies ? 1 preliiminary information/mindspeed proprietary and confidential preliminary information 1.0 product specification 1.1 absolute maximum ratings these are the absolute maximum ratings at or beyond which the ic can be expected to fail or be damaged. reliable operation at these extremes for any length of time is not implied. 1.2 recommended operating conditions table 1-1. absolute maximum ratings symbol parameter rating units v cc power supply voltage -0.4 to +6.5 v v cc 3 3.3v power supply voltage (when v cc 3 is connected to v cc ) -0.4 to +4.0 v t a ambient operating temperature -40 to +95 c t stg storage temperature -65 to +150 c ipb out_max maximum pre-bias output current at pb out 20 ma i mod_max maximum modulation current 140 ma table 1-2. recommended operating conditions parameter rating units power supply: (v cc -gnd) (apply no potential to v cc 3) or (v cc 3-gnd) (connect v cc to same potential as v cc 3) +5v 7.5% or +3.3v 7.5% v junction temperature -40 to +125 c operating ambient -40 to +95 c
product specification 02097-dsh-001-c mindspeed technologies ? 2 preliiminary information/mindspeed proprietary and confidential preliminary information 1.3 dc characteristics 1.3.1 dc electrical char acteristics - led driver v cc = 3.05 to 3.55v or 4.7 to 5.5v, t a = -40c to +95c, unless otherwise noted. typical values are v cc = 3.3v, ipb out = 4ma, i mod = 50ma. table 1-3. dc electrical characteristics - led driver symbol parameter conditions minimum typical maximum units i cc v cc t supply current using external 3.3v supply v cc = 3.3v (1) additional current when operating from 5v supply ? ? 34 1.5 43 ? ma v cc 3thl 3.3v supply detection (low voltage) threshold (3) 2.6 2.8 3.0 v v cc 3hh 3.3v supply detection (high voltage) threshold (3) 3.65 3.8 4.1 v v cc 5thl 5v supply detection (low voltage) threshold 4.3 4.45 4.65 v v cc 5thh 5v supply detection (high voltage) threshold 5.6 6.0 6.2 v v modset modulation current ref. voltage reference for mod set 1.1 1.25 1.4 v v pbset pre-bias current setting output voltage reference voltage at pb set 1.1 1.25 1.4 v v faultl low fault voltage detection threshold (ib out , outp, c pb , mod set , pb set ) fault condition occurs when voltage drops below this level ? 100 200 mv v selfl self-biased voltage for pb out and outp during disable condition 0.5 1.6 1.8 v i pre-bias pre-bias current adjust range at pb out . v pbout > 0.7v 1 ? 10 ma i pbias(off) pre-bias current with output disabled dis = high v pbout = v cc 3 ? ? 150 a ratio of pre-bias output current to pb set current = i pre-bias / i pbset ?60?a/a vih_dis ttl/cmos i nput high voltage (dis) 2.0 ? 5.5 v vil_dis ttl/cmos input low voltage (dis) ??0.8v vih_cfg configuration logic input high voltage (config1 - 4) (4) v cc 3t-0.5 ? ? v vil_cfg configuration logic input low voltage (config1 - 4) (4) ??0.5v voh_fail logic output high voltage (fail) with external 10 k ? pull-up to v cc v cc - 0.6 ? ? v vol_fail logic output low voltage (fail) i ol = 0.8 ma ? ? 0.4 v r in differential input resistance transmitter data inputs ? 6 ? k ?
product specification 02097-dsh-001-c mindspeed technologies ? 3 preliiminary information/mindspeed proprietary and confidential preliminary information 1.3.2 dc electrical characte ristics - limiting amplifier v cc r = 3.05 to 3.55v or 4.7 to 5.5v, t a = -40c to +95c, unless otherwise noted. typical values are v cc = 3.3v, 25c. v cmself self-biased common mode input voltage data inputs floating ? v cc 3 - 1.3 ? v v incm common-mode input compliance voltage transmitter data inputs v cc 3 - 1.5 ? v cc 3 - v in(diff) /4 v v in(diff) differential input voltage = 2*(dinp high ? dinp low ) 300 ? 2400 mv notes: 1. excludes pre-bias and modulation currents delivered to the led. maximum supply current based on i mod = 90 ma, ipb out = 10 ma. 2. pre-bias and modulation currents add directly to power supply current in 5v applications; additional supply current noted exc ludes these currents. 3. v cc 3 supply okay circuitry monitors internally regulated voltage when only the +5v supply is used (v cc = 5v). 4. input is 3.3v tolerant logic. table 1-4. dc electrical characteristics - limiting amplifier symbol parameter conditions minimum typical maximum units i cc v cc r supply current includes pecl load additional current when operating from 5v supply ? ? 54 1.5 65 ? ma v outl pecl (1) pecl output low voltage (rxoutm, rxoutp) single ended; 50 ? load to v cc - 2v v cc - 1.86 v cc - 1.71 v cc - 1.62 v v outh pecl (1) pecl output high voltage (rxoutm, rxoutp) single ended; 50 ? load to v cc - 2v v cc - 1.06 v cc - 0.95 v cc - 0.88 v r in _diff differential input resistance ? 4 ? k ? v outl los pecl (1) los output high voltage (2) open collector, 4.7 - 10 k ? pull up to v cc 2.4 ? v cc v v outh los pecl (1) los output low voltage (2) i ol = 0.8 ma ? ? 0.4 v v outl los cmos los-st output low voltage (1, 2, 3) single ended; 50 ? load to v cc - 2v v cc - 1.9 v cc - 1.78 v cc - 1.66 v v outh los cmos los-st output high voltage (1, 2, 3) single ended; 50 ? load to v cc - 2v v cc - 1.13 v cc - 1.042 v cc - 0.95 v notes: 1. pecl level requirements apply from 0c to 95c. 2. m02091-11 has pecl los-st output, m02097-21 has cmos los-st output. 3. when los-st is terminated with a 510 ? resistor to ground, pecl out put high and low levels are appr oximately the same as for v outh pecl and v outl pecl. table 1-3. dc electrical characteristics - led driver symbol parameter conditions minimum typical maximum units
product specification 02097-dsh-001-c mindspeed technologies ? 4 preliiminary information/mindspeed proprietary and confidential preliminary information 1.4 ac characteristics 1.4.1 ac electrical char acteristics - led driver v cc t = 3.05 to 3.55v or 4.7 to 5.5v, t a = -40c to +95c, unless otherwise noted. typical values are v cc = 3.3v, ipb out = 4ma, i mod = 50ma. table 1-5. ac electrical characteristics - led driver symbol parameter conditions minimum typical maximum units i mod modulation current adjust range to meet ac specifications 30 ? 120 ma pp i mod(off) modulation current with output disabled dis = high ? ? 150 a ratio of modulation current to mod set current ? 140 ? a/a i mod-tc programmable range for modulation current temperature coefficient adjustable using tc slope 0?10 4 ppm/c t tcstrt programmable temperature at which modulation current tc compensation enables based on value set for tc start -40 (2) ?95c t r / t f modulation output rise / fall times 20% to 80%. measured using alternating 1111- 0000 pattern at 500 mbps; 5 ? load with 12pf/ 35 ? between outp and outn ? 200 500 ps os overshoot of modulation output into 5 ? load with 12pf/35 ? between outp and outn ?10?% rj random jitter ? 0.8 ? ps rms dj modulation output deterministic jitter into 5 ? load (includes pulse width distortion) 2 23 - 1 prbs at 500 mbps ?3060ps pp notes: 1. minimum voltage at outp > 0.7 v; led forward voltage and total series resistance must be consider ed if output is dc coupled t o led. 2. default if tc start is floating.
product specification 02097-dsh-001-c mindspeed technologies ? 5 preliiminary information/mindspeed proprietary and confidential preliminary information 1.4.2 ac electrical characte ristics - limiting amplifier v cc r = 3.05 to 3.55v or 4.7 to 5.5v, t a = -40c to +95c, unless otherwise noted. table 1-6. ac electrical characteristics - limiting amplifier symbol parameter conditions minimum typical maximum units v in(min) differential input sensitivity ber < 10 -12 at 1.25 gbps with k28.5 pattern 2 ? ? mv v i(max) input overload ber < 10 -12 , differential input 1200 ? ? mv ber < 10 -12 , single-ended input 600 ? ? v n rms input referred noise ? ? 285 v rms v los los programmable range differential inputs, 6.0 k ? r stset 8.4 k ? 5?55mv hys signal detect hysteres is (electrical); signal detect level set to 20 mv pp 246db rssipp peak-to-peak received signal strength indicator range 4?100mv bw lf small-signal -3db low frequency cutoff. excluding ac coupling capacitors ? 4 ? khz dj deterministic jitter k28.5 pattern at 500 mbps ? ? 50 ps rj random jitter 10 mv pp input ? 3 ? ps rms t r / t f data output rise and fall times 20% to 80%; outputs terminated into 50 ?; 10mv pp input ??250ps t los_on time from los state until los output is asserted los assert time after 1 v pp input signal is turned off; signal detect level set to 10 mv 2.3 ? 80 s t los_off time from non-los state until los is deasserted los deassert time after input crosses signal detect level; signal detect set to 10 mv with applied input signal of 20 mv pp 2.3 ? 80 s
product specification 02097-dsh-001-c mindspeed technologies ? 6 preliiminary information/mindspeed proprietary and confidential preliminary information 1.5 safety logic timing v cc = 3.05 to 3.55v or 4.7 to 5.5v, t a = -40c to +95c, unless otherwise noted. typical values are v cc = 3.3v, ipb out = 4ma, i mod = 50ma. table 1-7. safety logic timing symbol parameter conditions minimum typical maximum units t_off dis assert time rising edge of di s to fall of output signal below 10% of nominal (1) ?110 s t_on dis negate time falling edge of dis to rise of output signal above 90% of nominal (1) ?0.41ms t_init time to initialize includes r eset of fail; from power on after supply_ok or from negati on of dis during reset of fail condition ?4300ms t_wc window comparator hold-off time time during which the status of the fault detect comparators is ignored. 23?ms t_fault led fault time -- from fault condition to assertion of fail from occurrence of fault condition or when supply_ok is beyond specified range ?16100 s t_reset dis time to start reset dis pulse width required to initialize safety circuitry or reset a latched fault ??10 s t vcc _ ok supply okay delay time delay between supply_ok condition and when outputs are enabled ? 900 ? s note: 1. with c pb = 47 nf. figure 1-1. safety logic simplified block diagram dis fault_ok v cc 3_ok v cc _ok 3 .3v _only q q set cl r s r ~900 s typical fail output _enable * fault_ok indicates that no fault is detected at any of the fault sense nodes ~3 ms typical activate _ config _settings tc sl ope fault_ok normal scb + - ~2v configuration settings are not updated while tc slope is pulled high, but are updated when tc slope is at normal level normal scb
product specification 02097-dsh-001-c mindspeed technologies ? 7 preliiminary information/mindspeed proprietary and confidential preliminary information table 1-8. circuit response to single-point fault conditions on driver pins pin name circuit response to over-voltage condition or short to v cc circuit response to under-voltage condition or short to ground config1-4 does not affect output pow er (some conditions can selectively enable/disable driver output). does not affect output power (some conditions can selectively enable/disable driver output). v cc outputs are disabled if v cc exceeds the v cc _okay (high level) threshold. if so, fail will be asserted. (1) outputs are disabled if v cc voltage is below the v cc _okay (low level) threshold. if so, fail will be asserted. (1) v cc 3t outputs are disabled if v cc 3 exceeds the v cc 3_okay (high level) threshold. if so, fail will be asserted. (1) outputs are disabled if v cc 3 voltage is below the v cc 3_okay (low level) threshold. if so , fail will be asserted. (1) dinp, dinm led would remain in an optical one or zero condi tion. led would remain in an optical one or zero condition. c pb pre-bias current is turned off. does not affect led operation. a fault state occurs. (2) fail does not affect led operati on. does not affect led operation. dis bias and modulation outputs are disabled and sv cc is opened. does not affect led operation (normal condition for circuit operation). mod set no modulation current. a fault state occurs. (2) pb set pre-bias current is turned off. does not affect led power. a fault state occurs. (2) tc start modulation current may increase depending on operating temperature and tc slope setting. modulation current may decrease depending on operating temperature and tc slope setting. tc slope modulation current may decrease depending on operating temperature and tc start setting. modulation current may increase depending on operating temperature and tc start setting. pb out the led is turned off if connected to the led cathode. a fault state occurs. (2) outp led modulation is prevented and a fault state occurs. (2) a fault state occurs. (2) outn does not affect led operati on. does not affect led operation. gndo led modulation is prevented and a fault state may occur. (2) does not affect led operation. sv cc does not affect led operation. the led is turned off and a fault state occurs. (2) notes: 1. in this case a fault state will assert the fail output, but it is not latched. whil e the fault condition remains, the bias an d modulation outputs are disabled and the switch at sv cc is open. no fault occurs if in safety circuit bypass (scb). 2. in this case a fault state will assert and latch the fail outp ut, disable bias and modulation out puts and open the switch at sv cc . no fault occurs if in safety circuit bypass (scb).
product specification 02097-dsh-001-c mindspeed technologies ? 8 preliiminary information/mindspeed proprietary and confidential preliminary information figure 1-2. m02097 safety logic timing characteristics low ?ok? low hot plug (dis low) t_init < 5 ms (3 ms typ.) supply (1) fail dis led output low 3.3v low slow ramping 3.3v operation (dis low) 3.3v t_init < 5 ms (3 ms typ.) v cc fail dis led output v cc 3 low 5v low slow ramping 5v operation (dis low) 3.3v t_init < 5 ms (3 ms typ.) v cc fail dis led output v cc 3 low ?ok? fail dis low led output high transmitter enable t_on < 1 ms (300 s typ.) supply (1) low ?ok? low high transmitter disable fail dis led output t_ off < 10 s (1 s typ.) supply (1) low low response to fault low normal fault occurs high t_fault < 100 s (4 s typ.) fail dis led output fault sense node such as pb out 1. supply ?ok? means both v cc and v cc 3 are within their defined operating windows. note: ?led output? is equivalent to pre-bias current plus modulation current.
product specification 02097-dsh-001-c mindspeed technologies ? 9 preliiminary information/mindspeed proprietary and confidential preliminary information figure 1-3. m02097 safety logic timing characteristics (continued) low high fault recovery behavior low normal t_reset 10 s fault removed t_on < 1 ms (300 s typ.) fail dis led output fault sense node such as pb out fault reset attempt low (does not turn on) fail dis led output 10 s 10 - 20 s fault sense node such as pb out fail dis led output fault reset attempt low t_init < 5 ms (3 ms typ.) 10 s fault sense node such as pb out 1. supply ?ok? means both v cc and v cc 3 are within their defined operating windows. note: ?led output? is equivalent to bias current plus modulation current.
product specification 02097-dsh-001-c mindspeed technologies ? 10 preliiminary information/mindspeed proprietary and confidential preliminary information 1.6 m02097 configuration logic table 1-9. m02097 configuration logic config1 config2 config3 config4 dis/en los=jam/ no_jam los/st scb rxpol txpol special config. 0 0 0 0 0 0 0 0 0 0 none 0 0 0 m 0 0 0 0 0 1 none 0 0 m 0 0 0 0 0 1 0 none 0 0 m m 0 0 0 0 1 1 none 0 0 1 1 0 0 0 1 0 0 none 0 0 0 1 0 0 0 1 0 1 none 0 0 1 0 0 0 0 1 1 0 none 0 0 m 1 0 0 0 1 1 1 none 001m0 00000sc1 0 m 0 0 0 0 1 0 0 0 none 0 m 0 m 0 0 1 0 0 1 none 0 m m 0 0 0 1 0 1 0 none 0 m m m 0 0 1 0 1 1 none 0 m 1 1 0 0 1 1 0 0 none 0 m 0 1 0 0 1 1 0 1 none 0 m 1 0 0 0 1 1 1 0 none 0 m m 1 0 0 1 1 1 1 none 0m1m0 01000sc2 m 0 0 0 0 1 0 0 0 0 none m 0 0 m 0 1 0 0 0 1 none m 0 m 0 0 1 0 0 1 0 none m 0 m m 0 1 0 0 1 1 none m 0 1 1 0 1 0 1 0 0 none m 0 0 1 0 1 0 1 0 1 none m 0 1 0 0 1 0 1 1 0 none m 0 m 1 0 1 0 1 1 1 none m0 1m0 10000sc3 m m 0 0 0 1 1 0 0 0 none m m 0 m 0 1 1 0 0 1 none m m m 0 0 1 1 0 1 0 none mmmm 0 1101 1 none m m 1 1 0 1 1 1 0 0 none m m 0 1 0 1 1 1 0 1 none
product specification 02097-dsh-001-c mindspeed technologies ? 11 preliiminary information/mindspeed proprietary and confidential preliminary information m m 1 0 0 1 1 1 1 0 none m m m 1 0 1 1 1 1 1 none mm 1 m 0 1100 0sc4 1 1 0 0 1 0 0 0 0 0 none 1 1 0 m 1 0 0 0 0 1 none 1 1 m 0 1 0 0 0 1 0 none 1 1 m m 1 0 0 0 1 1 none 1 1 1 1 1 0 0 1 0 0 none 1 1 0 1 1 0 0 1 0 1 none 1 1 1 0 1 0 0 1 1 0 none 1 1 m 1 1 0 0 1 1 1 none 111m1 00000sc5 0 1 0 0 1 0 1 0 0 0 none 0 1 0 m 1 0 1 0 0 1 none 0 1 m 0 1 0 1 0 1 0 none 0 1 m m 1 0 1 0 1 1 none 0 1 1 1 1 0 1 1 0 0 none 0 1 0 1 1 0 1 1 0 1 none 0 1 1 0 1 0 1 1 1 0 none 0 1 m 1 1 0 1 1 1 1 none 011m1 01000sc5 1 0 0 0 1 1 0 0 0 0 none 1 0 0 m 1 1 0 0 0 1 none 1 0 m 0 1 1 0 0 1 0 none 1 0 m m 1 1 0 0 1 1 none 1 0 1 1 1 1 0 1 0 0 none 1 0 0 1 1 1 0 1 0 1 none 1 0 1 0 1 1 0 1 1 0 none 1 0 m 1 1 1 0 1 1 1 none 101m1 10000sc6 m 1 0 0 1 1 1 0 0 0 none 1m0 0 1 11000sc7 m 1 0 m 1 1 1 0 0 1 none 1m0m1 11001sc8 m 1 m 0 1 1 1 0 1 0 none table 1-9. m02097 configuration logic config1 config2 config3 config4 dis/en los=jam/ no_jam los/st scb rxpol txpol special config.
product specification 02097-dsh-001-c mindspeed technologies ? 12 preliiminary information/mindspeed proprietary and confidential preliminary information 1mm0 1 11010sc9 m 1 m m 1 1 1 0 1 1 none 1 mmm 1 1101 1sc10 m 1 1 1 1 1 1 1 0 0 none 1m1 1 1 11100sc5 m 1 0 1 1 1 1 1 0 1 none 1m0 1 1 11101sc3 m 1 1 0 1 1 1 1 1 0 none 1 m 1 0 1 1 1 1 1 0 sc11 m 1 m 1 1 1 1 1 1 1 none m 1 1 m 1 1 1 0 0 0 sc12 1 m m 1 1 1 1 1 1 1 sc13 1 m 1 m 1 1 1 0 0 0 sc14 key: 0, 1, m:0 = logic low; 1 = logic high; m = pin floating (pin goes to intermediate ?mid-range? self-biased voltage dis/en:0 = dis pin acts as tx_disable; 1 = dis pin becomes tx_enable los=jam / no_jam:0 = jam outputs upon lo s; 1 = do not jam outputs upon los los/st:0 = los-st pin is st (goes high with si gnal detect); 1 = los-st pin is high with los scb:0=latched fault; 1=safety circuit bypass mode txpol and rxpol:0 = default polarity; 1 = inverted polarity special config.:refer to special configurations table for definition of special configuration modes table 1-10. m02097 special configurations special config. # special config. name definition sc1 - sc11 test modes inter nal use only; do not use sc12 dcrdis disables the dc restore in th e limiting amplifier. can pass dc signal through limiting amp, but offset at limiting amplifier input passes through to outputs. sc13-14 test modes interna l use only; do not use table 1-9. m02097 configuration logic config1 config2 config3 config4 dis/en los=jam/ no_jam los/st scb rxpol txpol special config.
02097-dsh-001-c mindspeed technologies ? 13 preliiminary information/mindspeed proprietary and confidential preliminary information 2.0 pin definitions table 2-1. m02097 pad / pin descriptions (1 of 2) qfn pin number pin name function 1 rxoutm limiting amplifier inverting data output (pecl) . output is referenced to the rx supply input (v cc r). 2 rxoutp limiting amplifier non-inverting data output (pec l). output is referenced to the rx supply input (v cc r). 3v cc r power supply for limiting amplifier circuitry (3.3v or 5v). 4v cc t power supply for led driver circuitry (3.3v or 5v). 5tc slope modulation temperature compen sation slope. a resistor to ground sets the level of te mperature compensation for the modulation current. forcing this pin high (to 3.3v) ca uses the configuration logic to ignore configuration logic settings until this pin is released to it s normal level (~1.25v). temp erature compensation is disabled if this pin is floating. 6tc start a resistor to ground at this pin set s the temperature at which the modulation temperature compensation slope becomes active. letting this pin float results in a start temperature of ~-40 c. grounding this pin disables temperature compensation. 7 dinp transmitter positive data input. internally terminated with 4 k ? to self-bias voltag e of approximately v cc 3t - 0.65v. can be ac coupled. 8 dinm transmitter negative data input. internally terminated with 4 k ? to self-bias voltage of approximately v cc 3t - 0.65v. can be ac coupled. 9 fail safety circuit fault indica tor. goes high when a safety logi c fault is detected. the fail output is low when dis is high. open collector; 4.7 k ? to 10 k ? external pull-up required. 5v co mpatible when using a 5v supply. 10 dis disable control (ttl compatible). when high or left floating, the bias and modulation outputs are disabled. set low for normal operation. 7 k ? internal pull-up to v cc t. 11 mod set modulation current adjust. connect a resistor between this pin and ground to set led modulation current. 12 nc no connect, leave floating. do not connect to ground or v cc . 13 nc no connect, leave floating. do not connect to ground or v cc . 14 pb set a resistor connected from this pin to ground sets the led pre-bias current. l eave floating if pre-bias is not used. 15 nc not connected in package. 16 pb out led pre-bias current output. conn ect to led cathode with a 100 ? resistor between the led anode and cathode. 17 gndo ground for modulation output stag e. connect directly to ground or can connect to ground through an inductor. 18 outp transmitter positive modulation output. draws cu rrent when dinp is high. referenced to the sv cc (transmitter regulator output) voltage. 19 outn transmitter negative modulation output. draws cu rrent when dinp is low. referenced to the sv cc (transmitter regulator output) voltage. 20 sv cc internal power supply switch for led. provides redundant shutdown during a disable or fault condition.
pin definitions 02097-dsh-001-c mindspeed technologies ? 14 preliiminary information/mindspeed proprietary and confidential preliminary information 21 v cc 3t internally regulated voltage for led driver circuitry in 5v applications . connect directly to supply to allow wider power supply tolerance in 3.3v-only applications (internal regulator not in use). do not connect to power supply if v cc = 5v. 22 c pb a capacitor at this pin sets the compensation for the pr e-bias control. conn ect a capacitor between this pin and v cc 3 if pre-bias control is used. can leave floating if not using pre-bias. 23 st set loss of signal threshold setting input. conne ct a resistor between this pin and v cc 3 to set loss of signal threshold. 24 v cc 3r internally regulated voltage for limiti ng amplifier circuitry in 5v applications . connect directly to supply to allow wider power supply tolerance in 3.3v-only applications (i nternal regulator not in use). do not connect to power supply if v cc = 5v. 25 rxinp non-inverting limiting amplifier data input. internally terminated with 2 k ? to self-bias voltage of approximately v cc 3r - 0.5v. 26 rxinm inverting limiting amplifier data input. internally terminated with 2 k ? to self-bias voltag e of approximately v cc 3r - 0.5v. 27 config1 configuration logic input. these pins select led driver and limiting amplifier configurati ons and test modes. refer to configuration logic table ( table 1-9 ) for more information. three level l ogic where nominal level is mid-range (v cc 3t / 2) when floating. 28 config2 29 config3 30 config4 31 los-st limiting amplifier los or st (signal detect) output (m02097-11 pecl, m02097-21 cm os). configuration logic selects whether output is to be los or st . 5v compatible when using a 5v supply. 32 i ref internal reference current. must be connected to ground through a 12.4 k ? 1% resistor. table 2-1. m02097 pad / pin descriptions (2 of 2) qfn pin number pin name function
pin definitions 02097-dsh-001-c mindspeed technologies ? 15 preliiminary information/mindspeed proprietary and confidential preliminary information figure 2-1. m02097 package pin-out (5x5mm mlf) gnd rxinp rxinm config1 config2 config3 config4 los-st i ref c pb v cc 3t pb set nc nc mod se t dis fail rxoutm rxoutp v cc r v cc t tc slope tc start dinp dinm v cc 3r st set sv cc outn gndo pb out nc 1 2 3 4 5 7 6 8 12 11 10 916 15 14 13 20 19 18 17 24 23 22 21 28 27 26 25 32 31 30 29 outp
02097-dsh-001-c mindspeed technologies ? 16 preliiminary information/mindspeed proprietary and confidential preliminary information 3.0 functional description 3.1 overview the m02097 device is a highly integrated combined led driver and limiting amplifier intended for applications to 500 mbps. the part can be operated from a single 3.3v or 5v supply. many features are user-adjustable, including the pre-bias current, modulation current, temperature compensation control of modulation current, loss of signal threshold, using jam or not on the rx path and the rx and tx polarity. safety circuitry is also included to provide a latched shut-down of led bias and modulation current if a fault condition occurs. an internal v cc switch provides redundant shutdown of the led current under a fault condition. figure 3-1. m02097 block diagram v cc 3t sv cc out+ out- gnd 0 pb out input buffer d in - d in + tx disable fail dis reset v cc t gnd 3.3v regulator with bypass to safety logic to safety logic v cc v cc 3 laser driver modset pbset led pre-bias control threshold setting circuit biasing rxoutp rxoutm rssi los-st rxinm iref rxinp v cc r stset offset cancel dcr_disable limiting amplifier scb safety circuitry with latched fault output buffer tx_polarity rx_polarity config_2 tx_polarity rx_polarity config_3 config_1 dcr_disable c pb tc slope tc start los-to-jam config_4 los-to-jam los-st_sel los-st_sel los level detect comparator v cc 3r configuration logic modulation control vttx 4k ? 4k ? vttr 2k ? 2k ? output buffer regulator with bypass cmos/ttl (- 21 ) pecl ( -11 ) pecl
functional description 02097-dsh-001-c mindspeed technologies ? 17 preliiminary information/mindspeed proprietary and confidential preliminary information 3.2 internal regulator when operating from a 5v supply (v cc connected to +5v), an internal regulator provides a voltage of approximately 3.3v to the majority of the on-chip circ uitry. the on-chip regulator is internally compensated, requiring no external components. when a 3.3v supply is used (v cc connected to 3.3v, or both v cc and v cc 3 connected to 3.3v), internal logic configures the device for 3.3v operation and the regulator is switched to a low- resistance mode. the device decides whether or not the inte rnal regulator is enabled us ing internal sensing logic, the sensing logic also determines whether the device sa fety circuitry needs to moni tor for proper +5v supply voltage. 3.3 driver inputs the inputs to the data buffer are self-biased through resistors to an internal reference of approximately v cc - 1.3v. both cml and pecl input signals can be ac coupled to the m02097. ac coupling is recommended when using the internal regulator (v cc = 5v), though external level-shifting ma y be used if dc coupling is desired with 5v supply. 3.4 driver output stage the output stage incorporates feedback to maintain performance over the range of led modulation current. the output stage is nominally configured to drive an output load of ~5 ? with shunt rc compensation for leds. outp should be connected directly to the le d cathode. this will result in the optimum pulse re sponse while allowing the maximum modulation current to be achieved when the output is dc coupled to the load. the led driver output stage is separately grounded from the rest of the circuitry (through gndo) for optimum performance and control of output characteristics. the output can also be ac coupled to the led. led modulation current is controlled by adjusting current at mod set . the modulation current can be temperature compensated by setting slope through the tc slope pin and tc start sets the temperature at which the temperature compensation begins to operate. 3.5 safety circuitry comparators at pb set , mod set , pb out outp, and c pb will assert the fail output, indicating that a fault condition has occurred. this condition is latched and requires dis to be toggled or power cycling before reset occurs. sv cc is opened during a fault or disable condition. by setting dis high, the bias and modulation output currents are disabled. di s will disable led bias and modulation current if left floating. dis must be forced to a low state to enable the outputs. when safety circuit bypass (scb) mode is enabled, fail will indicate a fault condition, but the outputs will not be disabled under a fault condition. only the dis pin will shutdown the outputs when in scb mode.
02097-dsh-001-c mindspeed technologies ? 18 preliiminary information/mindspeed proprietary and confidential preliminary information 4.0 package specification figure 4-1. qfn32 package information note: view is for a 28 pin package. all dimensions in the tables apply for the 32 pin package 3.30 3.30 3.45 3.45 3.15 3.15 0.70 0.90
www.mindspeed.com general information: telephone: (949) 579-3000 headquarters - newport beach 4000 macarthur blvd., east tower newport beach, ca 92660 ? 2006 mindspeed technologies ? , inc. all rights reserved. information in this document is provided in connection with mindspeed technologies ? ("mindspeed ? ") products. these materials are provided by mindspeed as a service to its customers and may be used for informational purposes only. except as provided in mindspeed?s terms and conditions of sale for such products or in any separate agreement related to this document, mindspeed assumes no liability whatsoever. mindspeed assumes no responsibility for errors or omission s in these materials. mindspeed may make changes to specifications and product descriptions at any time, without notice. mindspeed makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incom patibilities arising from future changes to its specifications and product descriptions. no license, ex press or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. these materials are provided "as is" withou t warranty of any kind, either express or implied, relating to sale and/or use of mindspeed products including liability or warranties relating to fitness for a particular purpose, consequential or incidental damages, merchantability, or infringement of any patent, copyright or other intellectual property right. mindspeed further does not warrant the accuracy or completeness of the information, text, graph ics or other items contained within these materials. mindspeed shall not be liable fo r any special, indirect, incidental, or consequential damages, including without li mitation, lost revenues or lost profits, which may result from the use of these materials. mindspeed products are not intended for use in medical, lifesaving or life sustaining applications. mindspeed customers using or selling mindspeed pr oducts for use in such applications do so at their own risk and agree to fully indemnify mindspeed for any damages resulting from such improper use or sale. 02097-dsh-001-c mindspeed technologies ? 19 preliiminary information/mindspeed proprietary and confidential preliminary information

▲Up To Search▲

Price & Availability of M02097G-11

	To Download M02097G-11 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .