1 multimedia ics video signal switcher for av amplifiers BA7626 / BA7626f the BA7626 and BA7626f are video signal switches that contain two five-channel analog multiplexers for switching chroma and audio signals, and two wide-band 6db amplifiers. by simply adding transistor buffers to the outputs, it is possible to construct a record / playback switch for two record / playback vcrs, and three video playback machines (eg. laser desk players). input switching and vcr record switching can be done independently. the inputs are termi- nated with 20k w resistors, and are suitable for switching chroma and audio signals. applications av amplifiers (audio signals and s-pin chroma signals) and video selectors features 1) 5-input / 3-output switches. 2) 20k w input impedance. 3) built-in 6db amplifiers. 4) 5v supply voltage. absolute maximum ratings (ta = 25?) parameter symbol limits unit 9v mw topr c tstg c v cc 500 * pd ? 25 ~ +70 ? 55 ~ +125 power supply voltage power dissipation operating temperature storage temperature * reduced by 5.0mw for each increase in ta of 1 c over 25 c.
2 multimedia ics BA7626 / BA7626f truth table cde v out1 ll * hl * in2 lh * in3 h h l in4 hhh in5 abe ll * in1 hl * in2 lh * in3 h h l in4 hhh in5 cde v out2 ll * in1 hl * lh * in3 h h l in4 hhh in5 note 1: * indicates "don't care" (h or l). monitor out block diagram in5 1in1 ctl a v cc v cc in2 ctl b v out2 gnd gnd in4 ctl e ctl d 16 15 14 13 12 11 10 9 2 3 4 5 6 7 8 in3 ctl c logic logic 6db 6db monitor out
3 multimedia ics BA7626 / BA7626f equivalent input / output circuits (unless otherwise noted, ta=25? and v cc = 5v) v cc in 4.3v 30k 2k 50k d 50k 30k 20k qn qn qn qp qn 200 100 m a v cc ctl monout qn20 qn6 100 17k qn qn2 qn3 v cc vout qn20 qn15 100 40k qn qn5 v cc 200 m a d 600 m a pin no. 3.6v 3 5 7 12 16 in5 in4 in3 in2 in1 6 8 9 11 15 ctl e ctl d ctl c ctl b ctl a 0.6v 2.0v monout 1 2.0v 10 14 v out 2 v out 1 pin name standard voltage (no input signal) equivalent input / output circuit
4 multimedia ics BA7626 / BA7626f electrical characteristics (unless otherwise noted, ta = 25? and v cc = 5v) parameter symbol min. typ. max. unit conditions v cc 4.5 5.0 5.5 v i cc 15.0 20.0 ma v om 2.3 2.5 v p-p f = 1khz, thd = 0.5 % g v db f = 1mhz, v in = 1v p-p c t 65 ? 45 db f = 4.43mhz, v in = 1v p-p ctm 35 ? 25 db f = 4.43mhz, v in = 1v p-p g f ? 3 0 db 10mhz / 1mhz, v in = 1v p-p z in 16 20 24 k w v th 2.2 3.3 v 6.7 6.2 5.7 3 operating voltage supply current maximum output level voltage gain interchannel crosstalk mute level frequency characteristic input impedance ctl pin switch level s not designed for radiation resistance. measurement circuit logic logic 6db 6db 12 3 456 7 8 16 15 14 13 12 11 10 9 sw 5 sw 4 sw 3 1 2 3 75 105 monitor out 12 3 v cc v cc v v v 1 2 3 75 105 v 1 2 3 75 105 105 v sw e 12 3 v sw d 1 23 105 75 105 v v v v v 1 v cc v out1 sw a sw 1 sw 2 sw b sw c v out2 2 3 1 23 105 75 105 v v 1 v cc v cc 2 3 1 2 3 a 103 4.7 m v cc 105 105
5 multimedia ics BA7626 / BA7626f measurement conditions sw 1 sw 2 sw 3 sw 4 sw 5 sw a sw b sw c sw d sw e i cc 3333322222 v om 1mon v om 2mon v om 3mon v om 4mon v om 5mon 2 3 3 2 3 3 2 3 3 2 3 3 2 3 2 3 2 2 3 3 2 2 2 * * * 3 2 g v 1mon g v 2mon g v 3mon g v 4mon g v 5mon 2 3 3 2 3 3 2 3 3 2 3 3 2 3 2 3 2 2 3 3 2 2 2 * * * 3 2 c t 1 - 2mon c t 1 - 3mon c t 1 - 4mon c t 1 - 5mon 2 3 3 3 3 2 3 2 2 3 2 2 2 * * * 3 2 c t 2 - 1mon c t 2 - 3mon c t 2 - 4mon c t 2 - 5mon 3 2 3 3 3 3 3 2 2 3 2 2 2 * * * 3 2 c t 3 - 1mon c t 3 - 2mon c t 3 - 4mon c t 3 - 5mon 3 3 2 3 3 3 2 2 2 3 3 2 2 * * * 3 2 c t 4 - 1mon c t 4 - 2mon c t 4 - 3mon c t 4 - 5mon 3 3 3 2 3 3 2 2 2 3 3 2 2 * * * 3 c t 5 - 1mon c t 5 - 2mon c t 5 - 3mon c t 5 - 4mon 3 3 3 3 2 3 2 2 2 3 3 2 2 * * * 2 g f 1mon g f 2mon g f 3mon g f 4mon g f 5mon 2 3 3 2 3 3 2 3 3 2 3 3 2 3 2 3 2 2 3 3 2 2 2 * * * 3 2 v om 2out1 v om 3out1 v om 4out1 v om 5out1 3 2 3 3 2 3 3 2 3 3 3 2 * * 2 3 2 2 3 2 2 2 * 3 2 parameter symbol switch settings measure- ment method current dissipation monitor out maximum output level note 1 voltage gain note 2 monitor out interchannel crosstalk note 3 monitor out frequency characteristic note 4 v out1 maximum output level note 1
6 multimedia ics BA7626 / BA7626f measurement conditions sw 1 sw 2 sw 3 sw 4 sw 5 sw a sw b sw c sw d sw e g v 2out1 g v 3out1 g v 4out1 g v 5out1 3 2 3 3 2 3 3 2 3 3 3 2 * * 2 3 2 2 3 2 2 2 * 3 2 c t 1 - 2out1 c t 1 - 3out1 c t 1 - 4out1 c t 1 - 5out1 2 3 3 3 3 * * 3 3 2 2 3 2 2 2 * 3 2 c t 2 - 1out1 c t 2 - 3out1 c t 2 - 4out1 c t 2 - 5out1 3 2 3 3 3 * * 3 3 2 2 3 2 2 2 * 3 2 c t 3 - 1out1 c t 3 - 2out1 c t 3 - 4out1 c t 3 - 5out1 3 3 2 3 3 * * 3 2 2 2 3 3 2 2 * 3 2 c t 4 - 1out1 c t 4 - 2out1 c t 4 - 3out1 c t 4 - 5out1 3 3 3 2 3 * * 3 2 3 2 3 3 2 2 * 2 c t 5 - 1out1 c t 5 - 2out1 c t 5 - 3out1 c t 5 - 4out1 3 3 3 3 2 * * 3 2 3 2 3 3 2 2 * 3 g f 2out1 g f 3out1 g f 4out1 g f 5out1 3 2 3 3 2 3 3 2 3 3 2 * * 2 3 2 2 3 2 2 2 * 3 2 v om 1out2 v om 3out2 v om 4out2 v om 5out2 2 3 3 2 3 3 3 2 3 3 2 * * 3 3 2 2 3 2 2 2 * 3 2 g v 1out2 g v 3out2 g v 4out2 g v 5out2 2 3 3 2 3 3 3 2 3 3 2 * * 3 3 2 2 3 2 2 2 * 3 2 parameter symbol switch settings measure- ment method v out1 voltage gain note 2 v out1 interchannel crosstalk note 3 v out1 frequency characteristic note 4 v out2 maximum output level note 1 v out2 voltage gain note 2
7 multimedia ics BA7626 / BA7626f sw 1 sw 2 sw 3 sw 4 sw 5 sw a sw b sw c sw d sw e c t 1 - 2out2 c t 1 - 3out2 c t 1 - 4out2 c t 1 - 5out2 2 3 3 3 3 * * 2 3 2 2 3 2 2 2 * 3 2 c t 2 - 1out2 c t 2 - 3out2 c t 2 - 4out2 c t 2 - 5out2 3 2 3 3 3 * * 3 3 2 2 3 2 2 2 * 3 2 c t 3 - 1out2 c t 3 - 2out2 c t 3 - 4out2 c t 3 - 5out2 3 3 2 3 3 * * 3 2 2 2 3 3 2 2 * 3 2 c t 4 - 1out2 c t 4 - 2out2 c t 4 - 3out2 c t 4 - 5out2 3 3 3 2 3 * * 3 2 3 2 3 3 2 2 * 2 c t 5 - 1out2 c t 5 - 2out2 c t 5 - 3out2 c t 5 - 4out2 3 3 3 3 2 * * 3 2 3 2 3 3 2 2 * 3 g f 1out1 g f 3out1 g f 4out1 g f 5out1 2 3 3 3 3 2 3 3 2 3 3 2 * * 3 3 2 2 3 2 2 2 * 3 2 ctm v out1 ctm v out2 2 3 3 3 3 * * 3 2 3 * v th a v th b v th c v th d v th e 2 3 2 3 3 3 2 3 2 3 3 2 3 1 3 * 2 3 1 * 2 * 1 3 * * 3 1 * * 1 parameter symbol switch settings measure- ment method v out2 interchannel crosstalk note 3 v out2 frequency characteristic note 4 mute level note 5 ctl pin switching level note 6 note 1: connect a distortion meter to the output, and input a f = 1khz sine wave. adjust the input level until the output disto rtion is 0.5%. this output voltage at this time is the maximum output level v om (v p-p ). note 2: input a 1v p-p , 1mhz sine wave. the voltage gain (in db) is given by g v = 20 log (v out / v in ). note 3: input a 1v p-p , 4.43mhz sine wave. the interchannel crosstalk (in db) is given by c t = 20 log (v out / v in ) + 6. note 4: input 1v p-p , 1mhz and 10mhz sine waves. the frequency characteristic (in db) is given by g f = 20 log (v out (f = 10mhz) / v out (f = 1mhz)). note 5: input a 1v p-p , 4.43mhz sine wave. the mute level is given by ctm = 20 log (v out / v in ) + 6 (db) note 6: input a 1v p-p , 1mhz sine wave. reduce the ctl pin voltage from v cc . the ctl pin switching level (v th ) is the ctl pin voltage at which the v out level drops below 10mv p-p .
8 multimedia ics BA7626 / BA7626f application example v out1 1in1 monout front 75 2.2 m gnd in5 gnd in4 ctl e in3 ctl a v cc in2 ctl b ctl c 16 15 14 13 12 11 10 9 2 3 4 5 6 7 8 v out2 ctl d 75 2.2 470 m 75 2.2 47 m 103 a933 + 5.0v rear 75 2.2 m 75 2.2 m f / r ctl rec ctl aux 75 470 m 100 v cc bs ld mon ctl 75 v cc 75 470 m v cc 100 tv vtr out in1 vtr out in2 100 + + + + + + + + + external dimensions (units: mm) sop16 BA7626 BA7626f dip16 0.51min. 0.3 0.1 9 16 8 1 6.5 0.3 3.2 0.2 4.25 0.3 0.5 0.1 19.4 0.3 2.54 0 ~ 15 7.62 0.4 0.1 1.27 0.15 0.15 0.1 0.3min. 4.4 0.2 6.2 0.3 0.11 1.5 0.1 1 16 10.0 0.2 8 9
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