mitsumi sync separator with afc lva519 sync separator with afc monolithic ic lva519 outline this is a sync separator ic with afc. stable operation even in a weak electric field is made possible with the built-in afc circuit. a regulator also is built in, providing stable operation relative to power supply and temperature fluctuations. features 1. supports afc (horizontal sync signal) 2. afc off function 3. horizontal and vertical sync signal output pins 4. power supply voltage 4.7v~5.3v package sip-9a (lva519s) sop-14a (LVA519F) applications 1. tv 2. vcr 3. other video equipment equivalent circuit diagram sip-9a sop-14a
mitsumi sync separator with afc lva519 pin description (lva519s) pin no. pin name function internal equivalent circuit diagram 1 video in video signal input 2 v co free run frequency setting 3 pc out phase comparison output 4 c fu integrates composite signal and inputs to vertical sync playback circuit
mitsumi sync separator with afc lva519 5 gnd gnd 6 c osc free run frequency oscillation circuit 7 v sync vertical sync signal output 8 h sync horizontal sync signal output 9 v cc power supply pin description (LVA519F) pin no. pin name function internal equivalent circuit diagram 1 nc 2 video in video signal input 3 v co free run frequency setting
mitsumi sync separator with afc lva519 4 pc out phase comparison output 5 c fu integrates composite signal and inputs to vertical sync playback circuit 8 c osc free run frequency oscillation circuit 10 v sync vertical sync signal output 11 h sync horizontal sync signal output 12 v cc power supply 13 nc 14 nc 9 nc 6 nc 7 gnd gnd
mitsumi sync separator with afc lva519 absolute maximum ratings (ta=25c) item symbol ratings units storage temperature t stg - 40~+125 c operating temperature t opr - 2~+75 c power supply voltage v cc max. 7 v allowable loss pd 470 (sip-9a) 350 (sop-14a) mw recommended operating conditions (ta=25c) item symbol min. typ. max. units recommended power supply v cc 4.7 5.0 5.3 v voltage range recommended input v in 0.8 2.0 3.2 v p - p signal voltage electrical characteristics (except where noted otherwise, ta=25c, v cc =5.0v, v in =2.0v p - p ) item symbol measurement conditions min. typ. max. units consumption current id refer to measuring circuit 7.0 10 ma horizontal sync output (h) v hh refer to measuring circuit 4.9 5.0 v horizontal sync output (l) v hl refer to measuring circuit 0.2 0.4 v vertical sync output (h) v vh refer to measuring circuit 4.9 5.0 v vertical sync output (l) v vl refer to measuring circuit 0.2 0.4 v free-running frequency setting range f o refer to measuring circuit 14.5 17.0 khz power supply fluctuation of f o 1 refer to measuring circuit 300 %/v free-running frequency free-running frequency temperature f o 2 refer to measuring circuit 400 ppm/v coefficient capture range capture range f c refer to measuring circuit 1.0 1.3 khz lock range f l refer to measuring circuit 1.9 2.5 khz afc output delay time td refer to measuring circuit 0.3 0.7 1.1 s afc output pulse width p w refer to measuring circuit 3.5 5.0 6.5 s schmitt trigger (h) vth h refer to measuring circuit 1.9 2.1 2.3 v threshold (l) vth l refer to measuring circuit 1.1 1.3 1.5 v sync separation level v sepa refer to measuring circuit 80 115 170 mv afc off resistance r afc refer to measuring circuit 2.7 4.0 6.0 k
mitsumi sync separator with afc lva519 measuring procedures (except where noted otherwise, ta=25c, v cc =5.0v, v in =2.0v p - p ) item symbol switch state measuring procedures s1 s2 s3 s4 s5 consumption current id b b a a a horizontal sync (h) v hh babba output (l) v hl babba vertical sync (h) v vh babba output (l) v vl babba free-running frequency f o abbba setting range power supply fluctuation of f o 1a b b b a free-running frequency free-running frequency f o 2a b b b a temperature coefficient capture range f c b/a a b b a lock range f l b/a a b b a afc output delay time td a/b a b b a afc output pulse width pw a/b a b b a schmitt trigger (h) vt hh babba threshold (l) vt hl connect a dc ammeter to v cc pin. input standard color bar 2v p - p . measure at tp5 input standard color bar 2v p - p . measure at tp4. adjust vr1 and measure frequency at tp5. with fo at 15.73khz, vary vcc between 4.0v~6.0v and measure at tp5. with fo at 15.73khz, vary temperature between - 20c and 80c and measure at tp5. input standard color bar 2v p - p and measure at tp1 and tp5. * 1 input standard color bar 2v p - p and measure at tp1 and tp5. * 1 input standard color bar 2v p - p and measure at tp2 and tp5. * 2 input standard color bar 2v p - p and measure at tp5. * 2 measure at tp3 and tp4. * 3 notes: * 1 capture range (fc) vary vr1 between max min and min max with sw1, and for each lock make sw1 a and measure at tp5. data : f c 1 and f c 2 smaller value lock range (fl) with sw1 at b and locked, vary vr1 and when the lock is released, make sw1 a and measure at tp5. data : f l 1 and f l 2 smaller value fc1 fc2 15.73khz fl1 fl2 15.73khz measuring procedures (except where noted otherwise, ta=25c, v cc =5.0v, v in =2.0v p - p ) item symbol switch state measuring procedures s1 s2 s3 s4 s5 sync separation v sepa babba level afc switching r afc babbb resistance raise horizontal sync signal level of input standard color bar 2v p - p and measure the level when a signal is output at tp5. with fo at 15.73khz, vary iafc, and determine according to iafc value when tp5 output signal switches to a composite signal, and tp6 voltage v6. r afc =v6/i a 1
mitsumi sync separator with afc lva519 * 2 * afc output delay time (td) set sw1 at a and adjust tp5 output to 15.73khz. then set sw1 to b and measure td from tp2 and tp5 waveforms. (specified at 50% of sync signal amplitude) * afc output pulse width (pw) set sw1 at a and adjust tp5 output to 15.73khz. then set sw1 to b and measure pw from tp5 waveform. (specified at 50% of sync signal amplitude) * 3 * schmidt trigger threshold (vth h ) (vth l ) measure vth h and vth l at tp3 and tp4. tp4 tp3 v thh v thl measuring circuit sip-9a sop-14a tp2 tp5 50 50 100 pw td
mitsumi sync separator with afc lva519 application circuits sip-9a sop-14a
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