KA8405 3-input switch 3-input switch the KA8405 is a monolithic integrated circuit designed for the 3-input switch in a vcr or a tv system. features ? suitable for video and audio signal ? low current operation ( 5.6ma typ ) ? very low level crosstalk ( - 70db typ ) 9- sip ordering information device KA8405 package 9-sip operating temperature - 10 c ~ + 75 c block diagram input1 ctl1 input2 ctl2 gnd input3 v cc muting output 1 2 3 4 5 6 7 8 9 buff b i a s 15 ? 15 ? 15 ? sw
KA8405 3-input switch truth table ctl1 h l l h * ctl2 l h l h * muting l l l l h output input 1 input 2 input 3 undefined none pin descriptions pin no function dc voltage in / out circuit 1input1 6.1v 2 same as pin 1 4 control inptut 2 logic low logic high (note 6) 5gnd 6.1v 7 vcc 9.0v control input 1 logic low logic high (note 6) 3 input2 6input 3 muting 8 9 output 5.3v 6.1v * don w care same as pin 2 same as pin 1 logic low, logic high (note 6) same as pin 2 note 6 : logic low < 2.7v, logic high > 3.7v
KA8405 3-input switch absolute maximum ratings characteristic supply voltage power dissipation operating temperature storage temperature symbol vccmax vinput vct1 pdmax topr tstg value 14 5 vcc - 0.2 vcc vcc + 0.2 500 - 20 ~ 75 - 40 ~ 125 unit v vpp v mw c c signal level at input pin electrical characteristics ( vcc = 9v, ta = 25 c) characteristic symbol test conditions min typ max unit supply voltage total current prequency characteristic vi = 2.5vpp, 20hz / 100khz vo ( 20hz ) / vo ( 100khz ) vi = 2.5vpp, 20hz / 100khz vo ( 20hz ) / vo ( 100khz ) insertion loss distotion differential gain differential phase output offset voltage vcc icc gl thd dg dp vos gf1 gf2 sw control voltage video output level input impedance output impedance note 1 sw1 ~ sw6 = "2" 8.0 4.2 9.0 5.6 10.0 8.2 v ma - 0.5 0 0.5 db vi = 2.5vpp 100khz, vo / vi vi = 2.5vpp, 1khz note 3 vi = 2.0pp 4.43mhz cross - talk c r1 v con v out ri ro vi = 2.0pp 100khz, vo - 0.5 0 - - - 50 - 2.7 1.89 - 0.3 0.2 0.5 0.5 0 - 70 3.2 - 50 1.93 15 10 0 0.5 - - + 50 - 60 3.7 - 40 2.00 db % % deg mv db v vpp ? note 4 muting capacity c tm db vi = input waveform 1 (note 2) vi = input waveform 1 (note 2) note 1 : supply voltage means a recommended operation range but spec data guarantee. note 2 : not set system guaranteed but ic test program guaranteed note 3 : in sw1=sw2=sw3=2, sw4=1 a sw5=sw6=2 etc., read the difference of output dc voltage. note 4 : guaranteed switching level (active & non-active) note 5 : specifications are subject to change without notice.
KA8405 3-input switch input waveform 1 3.58mhz 571mvpp cw 2vpp apl : 50% 571mv 63.5us characteristics graph 2 4 6 8 10 12 14 16 18 2 4 6 8 10 icc ( ma ) vcc vs icc ( ta = 25 c ) - 60 - 30 0 30 60 90 120 150 3 4 5 6 7 ta vs icc ( vcc = 9v ) vcc(v) ta ( c ) 12 4681012 2 4 2 4 frequency response 0 freq (mhz) gain ( ) icc ( ma )
KA8405 3-input switch test circuit + + + + + 10uf 5.1k .01uf 10uf 5.1k .01uf 10uf 5.1k .01uf 100uf .01uf v cc = 9v v out 10k 82p 10uf vi vc =5v 12 sw1 12 sw4 12 sw2 12 sw5 12 sw3 12 sw6 1 2 3 4 5 6 7 8 9 buff b i a s 15 ? 15 ? 15 ? sw
KA8405 3-input switch application circuit + + + + + 10uf 5.1k .01uf 10uf 5.1k 10uf 5.1k .01uf 100uf .01uf v cc = 9v v out 10k 82p 10uf from de - mod ic external jack external jack vc =5v .01uf .01uf 1 2 3 4 5 6 7 8 9 buff b i a s 15 ? 15 ? 15 ? sw
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