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KA2192 4 input a/v switch 4 in put a/v switch the KA2192 is audio/video 4 input switching ic in the video system for s-vhs(super-video home system). this device can select audio/video signal of each different 4 kinds input. this device separates y(luminance) and c( chroma) for s-vhs. function two input decoder mode selector 4 * 1 switch mute switch bias stage gain switch (6db or 8db) clamp circuit tv polarity switch 2 * 1 switch pulse generator switching part for selecting channel feature indepandent and stable bias block to prohibit cross talk of and source. available the mode output. tv polarity switch can select negative and positive video signal to switch conditions. clamp block for stabile video signal. switch for to control signal gain (6db or 8db). separation and processing of y(luminance) and c( chroma) for s-vhs video. device package operating temperature KA2192 30-sdip-400 -20~+65 c 30-sdlp-400 ordering information
KA2192 4 input a/v switch block diagram 30 29 28 27 25 24 23 22 21 20 19 17 16 ext1 l tv r tv tv-in ls-in sy-in tv polarity sc-in l1 r1 l2 ext2 r2 sw1 vout vcc vcc gain s/w c-in clamp y-out mode-up l-out r-out c-out gnd y-out mute sw2 av=1 4 18 6db inv 3 4 5 6 9 10 12 15 8 13 1 2 7 11 14 6db or 8db 6db 4 av=1 4 + 4 x 1 switch av=1 mode select 26 3 abc rs-in 2 x 1 switch pulse gen mute s/w a b c d decoder 2 x 4 swich clamp
KA2192 4 input a/v switch absolute maximum ratings (t a =25 c) electrical characteristics characteristic symbol value unit supply voltage v cc max 15 v input terminal signal voltage v s max 3 vp-p input terminal voltage v in max gnd-0.3~vcc+0.3v - power dissipation p d max 1.6 w operating temperature t opr -20~+70 c storage temperature t stg -55~+150 c characteristic symbol test conditions min typ max unit total current i cc v cc =9v 21 32 43 ma input dynamic range v dy v dy c v dy 15khz sine wave 1.7 5.5 1.9 2.2 6.5 - - - vp-p video gain g v d g v g yc g dy 15 khz 1v p-p sine wave 5.6 0.5 -0.2 5.0 6.0 2.0 0 6.0 7.0 2.5 0.5 7.0 db video crosstalk y and c crosstalk c m c yc 4.45 khz 1vp-p sine wave 50 50 64 64 - - s y s 2.4
KA2192 4 input a/v switch electrical characteristics( contiued) characteristic symbol test conditions min typ max unit frequency width f m f yc f yc 1v p-p sine wave 10 10 10 24 39 24 - - - mhz clamp level c l pal tv signal - 21 50 % sound dynamic range sound gain v dy g a 1 khz 1v p-p sine wave 5 -0.5 6 0 - 0.5 v p-p db sound frequency characteristics f a 1v p-p sine wave 100 - - khz source crosstalk c a 1 khz 1v p-p 60 72 - source and channel crosstalk c lr sine wave 60 72 - db sound mute atenuation m a 60 75 - db sw 1 threshold vtg v th1 1.0 2.0 3.0 sw 2 threshold vtg v th2 1.0 2.0 3.0 v sound mute treshold vtg v thm 1.3 2.3 3.3 tv polarity s/w threshold v thp - 4.0 - v m - 0 0.2 mode output voltage v m 1.7 2.0 2.3 v v m 3.7 4.0 4.5 s e tv a s
KA2192 4 input a/v switch operating principle in-output truth table of a/v switching ic for input switch conditions. sound mute switch a gain switch ? tv polarity switch sw input decoder out wound out video out y & c out code out sw1 sw2 a b c d l-out r-out v-out y out c out mode out l l h l l l ext2 ext2 ext2 - - 2(v) h l l h l l ext1 ext1 ext1 - - 2(v) h h l l h l tv tv tv - - 0(v) l h l l l h super super super s-y s-c 4(v) l:0(v) h:5(v) l:0.8(v) h:2.1(v) sound mute s/w =high[5] :sound off tv polarity sw=h a v = -1 gain sw =h: 8db if sw1(l) sw2(h) s-y &s-c out from ext1,2: 2[v] tv:0[v] s-vhs: 4[v] mutein sound-out l-out r-out h [5v] off off l [0v] on on gain switch h [5v] 8db l [0v] 6db tv polarity switch h [v cc ] a v = -1 l [gnd] a v =1 6db or 8 db a v
KA2192 4 input a/v switch test circuit 3 4 5 6 9 10 12 15 8 13 1 2 7 11 14 30 29 28 27 25 24 23 22 21 20 19 17 16 vout vcc vcc gain s/w c-in clamp y-out mode-up l-out r-out c-out gnd y-out mute sw2 18 26 ext1 l tv r tv tv-in ls-in sy-in tv polarity sc-in l1 r1 l2 ext2 r2 sw1 rs-in sw1 sw3 sw2 sw4 sw5 sw6 sw7 sw8 sw9 sw10 sw11 sw12 sw13 sw14 sw15 vcc 0.01 m f 47 m f sw27 sw26 sw24 3.3 m f sw17 sw16 + + + 10 m f vs v1

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