41907 ms pc 20070419-s00005 no.a0783-1/10 http://onsemi.com semiconductor components industries, llc, 2013 july, 2013 la72910v overview the la72910v is a fm modulation and demodulation single-chip ic. its adjustment free modulation/demodulation circuit significantly reduces the number of peripheral circuits required and can contribute to lower production costs. functions ? video signal fm modulation and demodulation ? video signal emphasis and de-emphasis function ? drop-out detecting function of video fm signal ? fm mute function at second-call specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum supply voltage v cc max 7.0 v allowable power dissipation pd max 300 mw operating temperature topr ta 70 c * -30 to +70 c storage temperature tstg -40 to +150 c when mounted on a 114.3mm 76.1mm 1.6mm, glass epoxy. recommended operating conditions at ta = 25 c parameter symbol conditions ratings unit recommended supply voltage v cc 5.0 v allowable operating voltage range v cc op ta = -30 to +70 c 4.7 to 5.5 v monolithic linear ic fm modulator and demodulator ic orderin g numbe r : ena0783 stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above the recommended oper ating conditions is not implied. extended exposure to stresses above the recommended operating conditions may affect device reliabili ty.
la72910v no.a0783-2/10 electrical characteristics at ta = 25 c, v cc = 5v dc characteristics t6 = 0.4v, t9 = 2.0v, t10 = 0.4v ratings parameter symbol in out conditions min typ max unit control terminal (pin6,9) low level cnt6l cnt9l t6 t9 low level of control terminal of all mode. t6 = 0.4v(demod mode), t9 = 0.4v (standby mode) 0 0.4 v control terminal (pin6,9)high level cnt6h cnt9h t6 t9 high level of input terminal of all mode t6 = 2.0v (mod mode), t9 = 2.0v (normal mode) 2.0 5.0 v input5 low level in5l t5 low level of input terminal of mod mode t6 = 2.0v, t9 = 2.0v, t10 = 0.4v 0 0.4 v input5 high level in5h t5 high level of input terminal of mod mode t6 = 2.0v, t9 = 2.0v, t10 = 0.4v 2.0 5.0 v input10 low level in10l t10 low level of input terminal of mod mode t5 = 0.4v, t6 = 2.0v, t9 = 2.0v 0 0.4 v input10 high level in10h t10 high level of input terminal of mod mode t5 = 0.4v, t6 = 2.0v, t9 = 2.0v 2.0 5.0 v output10 terminal high level oph10 t10 demod mode: fm-signal input t6 = 0.4v, t9 = 2.0v, pull-up:15k 4.7 v output10 terminal low level opl13 opl18 t10 t10: demod mode: fm no-signal measure the sink level of output terminal. t6 = 0.4v, t9 = 2.0v, pull-up:15k 0 0.25 0.4 v input12 low level in12l t12 t12 vo ltage of terminal at agc on t6 = 0.4v, t9 = 2.0v 0 3 v input12 high level in12h t12 t12 voltage of terminal at agc off t6 = 0.4v, t9 = 2.0v 4.5 5.0 v 5pin ac input dynamic range acin5 t5a t3 input amplitude level of fm signal freq: 11.5mhz to 13.5mhz 1000 mvp-p 16pin ac input dynamic range acin16 t16a t3 maximum input level of t16a at video signal 1.5 vp-p video fm modulation block (mod) t6=2.0v,t9=2.0v,t10=0.4v,t15=5v ratings parameter symbol in out conditions min typ max unit current dissipation i cc r measure the currents into pins 2 (mod mode) 19.5 23.0 26.5 ma fm modulator output level vfm1 t3 measure the output level on t3 (no signal input) it is load impedance 200 between t3-gnd. 1.8 2.2 vp-p fm mute output level vfm2 t3 measure the t3 output level with 2nd call 0 10 20 mvp-p carrier frequency ffm t3 measure the output frequency on t3 with no signal input 10.9 11.5 12.1 mhz fm output second harmonic distortion thd2 t3 measure the second harmonics distortion with the above condition -30 -20 db deviation dev t16a t3 with t16a 100% white 1vp-p signal, measure the deviation on t3 1.9 2.0 2.1 mhz fm modulator linearity (11.5mhz to 13.5mhz) lmod t16a t3 let f2.85, f3.35 and f3.85 be the output frequency when 2.85v, 3.35v and 3.85v is applied to t16a lmod= 100 -2 0 +2 % emphasis gain gemp t16a t12 with v in a 300mvp-p 10khz sine wave, measure the ratio of the levels on t16a and t12 -7.5 -6.0 -4.5 db main linear emphasis characteristics(1) gme1 t16a t12 with v in a 300mvp-p 500khz sine wave, measure the ratio of the levels on t16a and t12 -1.5 0.0 +1.5 db main linear emphasis characteristics(2) gme2 t16a t12 with v in a 300mvp-p 2mhz sine wave, measure the ratio of the levels on t16a and t12 2.5 4.0 5.5 db white clipping level lwc t16a t12 with v in a 1.5vp-p 100% white video signal. measure the white clipping level on t12 180 200 220 % dark clipping level ldc t16a t12 with v in a 1.5vp-p 100% white video signal. measure the dark clipping level on t12. -60 -50 -40 % fm stop beginning delay time (vd characteristic 1b) tc1 t5 t3 c7=0.01 f, time from fall of t5 signal to doing of fm carrier of t3 stop 240 300 360 sec fm stop time (vd characteristic2a) tc2 t5 t3 c8=0.001 f, stop time of fm carrier of t3 30 40 50 sec minimum vd pulse width vdt t5 t3 c7=0.01 f, minimum vd pulse width to which tc1b is normally output 63 sec f3.35 - (f3.85 + f2.85) / 2 f3.85 ? f2.85
la72910v no.a0783-3/10 video fm de-modulation block (demod) t6=0.4v,t9=2.0v ratings parameter symbol in out conditions min typ max unit current dissipation i cc p measure the currents into pi n 2 (demod mode) 24.0 28.0 32.0 ma video output level vout t5a t3 demodulation level, when the fm signal of 2.2mhz deviation. load impedance = 1k t3-gnd. 2.09 2.2 2.31 vpp video output level b voutb t5a t3 demodulation level, when the fm signal of 2.0mhz deviation. load impedance = 1k t3-gnd. in this case only, v cc make 4.5v to 5.5v. 1.9 2.0 2.1 vpp fm stop detection level (doc characteristic 1) doc1 t5a t12 t10 t12 t5 = 11.5mhz, 300mvp-p. measure t12 voltage (v12). set t12 v12 (agc-fix). t5 input level when t5 amplitude is decrease gradually, and t10 becomes "low" 40 60 mvp-p (drop delay down) ddd t5a t12 t10 t12 shift time from t5=300mvp-p 0mvp-p to t10?low?. 0.5 1.5 2.5 sec fm return judgment level doc2 t5a t12 t10 t12 t5=11.5mhz, 300mvpp, measure t12 voltage (v12). set t12 v12 (agc-fix ). t5 inputs the level when t5 amplitude is increase gradually, and t10 becomes "high" 60 90 mvp-p video dc level when returning doc2b t5a t12 t15 confirmation of output of video signal from t3. measurement of dc level. 0.5 1.0 1.5 v (drop delay rise) return operation delay time dwr t5a t12 t10 t12 shift time from t5 = 0mvp-p 300mvp-p to t10?high? 0.2 1.5 2.5 sec 4v regulator vreg t4 measuremen t of t4 dc level. 3.9 4.0 4.3 v range of input dynamic range acin5 t5a t3 dev = 2.0mhz. in put amplitude level of fm signal. (t5a: 11.5mhz to 13.5mhz) 500 1000 mvp-p dg dg t5a t3 0 6 10 % dp dp t5a t3 0 6 10 deg output voltage at mute muv t3 mute level measurement of t3 0 10 20 ire fm demodulation voltage (11.0m) vdem11 vdem12 vdem13 t5a t15 t5a = 11mhz, 100mvp-p, 200mvp-p and 400mvp-p. each t15 voltage measurement 0.3 0.8 1.3 v fm demodulation voltage (12.5m) vdem21 vdem22 vdem23 t5a t15 t5a = 12.5mhz, 100mvp-p, 200mvp-p and 400mvp-p. each t15 voltage measurement 0.7 1.2 1.7 v fm demodulation voltage (14.0m) vdem31 vdem32 vdem33 t5a t15 t5a = 14mhz, 100mvp-p, 200mvp-p and 400mvp-p each t15 voltage measurement 1.1 1.6 2.1 v fm demodulation linearity1.2.3 ldem1 ldem2 ldem3 calculate fm demodulation linearity ldem1 = {[vdem21 - (vdem11 + vdem31) / 2] / (vdem31 - vdem11)} 100 ldem2 = {[vdem22 - (vdem12 + vdem32) /2 ] / (vdem32 - vdem12)} 100 ldem3 = {[vdem23 - (vdem13 + vdem33) / 2] / (vdem33 - vdem13)} 100 -2 0 +2 % fm demodulation sensitivity1.2.3 sdem1 sdem2 sdem3 calculate fm recovery sensitivity with consider pin3 output level conversion ratio. sdem1 = (vdem31-vdem11)/2.5 sdem2 = (vdem32-vdem12)/2.5 sdem3 = (vdem33-vdem13)/2.5 0.28 0.33 0.38 v/mhz main linear de-emphasis amplitude gmed t5a t15 t5=200mvp-p fm signal (fm = 10khz,center carrier = 12.5mhz, dev = 1.0mhz) signal level of t15 243 270 297 mvp-p main linear de-emphasis characteristics(1) gmed1 t5a t15 t5 = 200mvp-p fm signal (fm = 500khz, center carrier = 12.5mhz, dev = 1.5mhz). signal level of t15 versus gmrd (ratio of gmed). -8.0 -6.0 -4.0 db main linear de-emphasis characteristics(2) gmed2 t5a t15 t5 = 200mvp-p fm signal (fm = 2mhz, center carrier = 9.25mhz, dev = 1.5mhz). signal level of t15 versus gmrd (ratio of gmed) -11.0 -9.0 -7.0 db
la72910v no.a0783-4/10 standby (standby mode) t9=0.4v ratings parameter symbol in out conditions min typ max unit current dissipation at standby i cc s t9 measure the currents into pin 2. (standby mode) 5.0 8.0 11.0 ma standby release time(1) (fm stop release) sask1 t6 t9 t3 t6 = 2.0vdc t9 = 0v 2v (standby release) time until fm career is output to t3. 0.0 1.0 2.0 usec standby release time(2) (video signal stop release) sask2 t6 t5a t9 t3 t6 = 0.4v, t5 = dev = 1.5mhz 100% white video signal of fm signal. t9 = 0v 2v (standby release), time until white 100% signal is output to t3 2.0 7.0 12.0 usec package dimensions unit : mm (typ) 3178b pin assignment sanyo : ssop16(225mil) 5.2 4.4 6.4 0.22 0.65 (0.33) 18 9 16 0.5 0.15 1.5max 0.1 (1.3) 1 2 3 4 5 6 7 8 emphasis filter v cc (5v) main_out regulator filter vd_in /fm_in mode control (mod/de-mod) drop delay (tc1) drop width (tc2) 16 15 14 13 12 11 10 9 video_in vd control/ de-emphasis out a_gnd de-emphasis filter emphasis monito r /fm-agc filter b_gnd fm-doc_out /2nd-call_in stand-by control top view
la72910v no.a0783-5/10 block diagram and application circuit exanple1 modulation (camera) application circuit exanple2 demodulation (monitor) 1 2 3 4 5 6 7 reg vd-in (negative pulse) fm-out v cc (5v) fm-stop 12db-amp video-mute fm-mod lpf main emphasis -6db clamp mod/demod control dff-sw fm-stop control 8 lpf/fm-agc d-lim fm-demod/lpf fm-agc-det main de-enphasis 16 15 14 13 12 11 10 9 mod mode (mod : hogh) tc1 tc2 do-det (do-low) standby control (low : fm-off) pin 10 : open collector output pin 3 : push-pull output + 10 f a-gnd main emphasis monitor b-gnd 2nd-call (push switch) standby sw (low : fm-off) (high : fm-on) a-v cc 0.1 f 0.01 f 0.01 f 1000pf 180pf 470 video-in (1vp-p) mod : dff_sw 2v : dff_on 0v : dff_off 1 2 3 4 5 6 7 reg fm-in video-out (2vp-p) v cc (5v) fm-stop 12db-amp video-mute fm-mod lpf main emphasis -6db clamp mod/demod control dff-sw fm-stop control 8 lpf/fm-agc d-lim fm-demod/lpf fm-agc-det main de-enphasis 16 15 14 13 12 11 10 9 demod mode (demod : low) tc1 tc2 do-det (do-low) standby control (low : fm-off) pin 10 : open collector output pin 3 : push-pull output + 1 f a-gnd 1.8k 100pf 1 f fm-agc off (off : 4.5v) b-gnd do-out standby sw (low : fm-off) (high : fm-on) 15k a-v cc 0.1 f 0.01 f
la72910v no.a0783-6/10 pin function pin no. pin name fm mod mode(outside camera) fm demod mode(inside monitor) note 1 emphasis filter emphasis filter connection pin n on connect(hi-z) if you don?t need, this pin is open. 2 v cc 5v v cc for fm modulation. v cc for fm demodulation. 3 main_out fm output (ro=200 :1.8vp-p) video output (ro=1k :2vp-p) push-pull output 4 regulator filter fm modulation block reference dc power supply. fm demodulation block reference dc power supply. 5 vd_in/fm_in vd input (hi: over 2v, low: under 0.4v) (vd det: high) fm input (recommend level: 100 to 620mvp-p) demod mode:set 3.3v by internal bias. (34k ? /66k ? ) 6 mode control set over 2v dc voltage. set under 0.4v dc voltage. outside camera / inside monitor setting. 7 drop delay (tc1) connect tc1 setting c. non connect(hi-z) 8 drop width (tc2) connect tc2 setting c. non connect(hi-z) 9 stand-by control fm blocks standby control. (fm block operate: over 2v , fm block standby: under 0.4v ) 10 fm-doc-out /2nd-call control 2nd-call input, 2nd-call: low (high: over 2v, low: under 0.4v) doc output (when do-det, output is low) demod mode: open collector output. 11 b-gnd circuit gnd 12 emphasis monitor /fm-agc filter emphasis monitor output fm agc co ntrol filter (agc-on: 0 to 3v dc, agc-off: 4.5v to 5v by external dc voltage.) mod mode: don?t connect capacitor. 13 de-emphasis filter non connect(hi-z) de-emphasis filt er connection pin. if you don?t need, this pin is open. 14 a-gnd circuit gnd 15 vd control /de-emphasis out dff control (on: over 2v, off: under 0.4v) de-emphasis output 16 video_in video signal input (from outside ccd camera: 1vp-p). video signal input (from de-emphasis block: 0.5vp-p). mod mode: maximum video input level is 1.5vp-p.
la72910v no.a0783-7/10 pin description pin no. pin name description equivalent circuit 1 emphasis filter main emphasis filter pin. before fm modulation, make emphasis characteristic at video signal. emphasis time constant must be matching at de-emphasis time constant. (if you don?t need the emphasis, this pin is open.) 2.7k 200 1k 620 1 r1 c1 2 v cc 5v v cc pin. supply voltage is 5v dc. please connect de-coupling capacitor. 3 main_out push-pull output pin. mod mode: fm carrier output. (1.8vp-p: rout=200 ) demod mode: video signal output. (2.0vp-p: rout=1k ) 40 3 mod 40 demod 4 regulator filter internal regulator filter pin. please connect 0.1 f (c1) 10k 4 c1 23k 50k 5 vd_in/fm_in demod mode: fm signal input. internal dc bias is 3.3v. please use capacitor (c1) coupling. mod mode: vd signal input. please input vd signal directory. please consider input impedance. 5 fm sig 200 1k 66k 34k 200 80 a 20 a c1 vd sig 6 mode control mod mode/ demod mode setting pin. mod mode: please set over 2v dc voltage. (2 to 5v). demod mode: please set under 0.4v dc voltage. (0 to 0.4v). 6 1k 30 a continued on next page.
la72910v no.a0783-8/10 continued from preceding page. pin no. pin name description equivalent circuit 7 drop delay (tc1) mod mode: tc1 filter pin. please connect c1. 7 200 1k 2k 60 a c1 1k 30 a 20 a 8 drop width (tc2) mod mode: tc2 filter pin. please connect c1. 8 200 2k 60 a c1 1k 30 a 9 stand-by control standby control pin. fm block standby: under 0.4v dc voltage. (0 to 0.4v) fm block operate: over 2v dc voltage. (2 to 5v) 9 1k 30 a 10 fm-doc-out /2nd-call control demod mode: drop-out output pin. this pin is open collector output, so please connect pull up resistor. mod mode: 2nd-call input. 2nd-call input: under 0.4v (0 to 0.4v) dc. normal: over 2v dc voltage. (2 to 5v) 10 1k 30 a 300 11 b-gnd circuit gnd. 12 emphasis monitor /fm-agc filter mod mode: emphasis monitor pin. demod mode: fm agc filter pin. if fm agc no need (=agc off), please set pin12 voltage over 4.5v dc voltage. (4.5 to 5v) 12 10k 500 60 a c1 100k 10k agc-det emp moni continued on next page.
la72910v no.a0783-9/10 continued from preceding page. pin no. pin name description equivalent circuit 13 de-emphasis filter demod mode: de-emphasis filter pin. de-emphasis time constant must be matching at emphasis time constant. (if you don?t need the emphasis, this pin is open.) 4.7k 13 r1 c1 300 a 2.5k sig 14 a-gnd circuit gnd. 15 vd control /de-emphasis out demod mode: video signal output after de-emphasis. output level is 0.5vp-p. connect capacitor to cl amp input (pin 16). mod mode: dff control pin. dff is on at over 2v dc voltage. (2 to 5v) 3 mod : dc in 200 demod 1ma sig c1 16 video_in mod mode: video signal input pin (from camera). input level is 1vp-p. demod mode: video signal input pin (from de-emphasis). input level is 0.5vp-p. 16 15k video input mod : 1vp-p demod : 0.5vp-p 200 a clamp c1 500 200
la72910v ps no.a0783-10/10 test circuit 1 2 3 4 5 6 7 8 emphasis filter v cc (5v) main_out regulator filter vd_in /fm_in mode control (mod/de-mod) drop delay (tc1) drop width (tc2) 16 15 14 13 12 11 10 9 video_in vd control/ de-emphasis out a_gnd de-emphasis filter emphasis monitor /fm-agc filter b_gnd fm-doc_out /2nd-call_in stand-by control t1 470 180pf t3a 200 1k sw3 10 f + t3 t4 0.1 f a b + 1 f t5a sw5 t4 t6 t7 t8 1000pf 0.01 f gnd t9 t10 t11 t12 t13 t14 t15 t16 1.8k 100pf a b sw16 + 1 f 10 f + 75 video_in t16a + 1 f a b sw12 15k pull up power supply v cc =5v current measure point on semiconductor and the on logo are registered trademarks of semiconductor components industries, llc (scillc). scillc owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. a listing of scillc?s product/patent coverage may be accessed at www.onsemi.com/site/pdf/patent-marking.pdf. scillc reserves the right to make changes without further notice to any products herein. scillc mak es no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability ar ising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequentia l or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s techn ical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorize d for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other appli cation in which the failure of the scillc product could create a situation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of persona l injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture o fthe part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws a nd is not for resale in any manner.
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