1 multimedia ics video signal switcher ba7611an / ba7611af the ba7611an and ba7611af are a three-channel analog multiplexers with built-in mute and a 6db amplifier. the ics designed for use in video cassette recorders. it features a large dynamic range and wide operating frequency range, and have sync-tip clamp inputs whitch are ideal for switching video signals. applications video cassette recorders and televisions features 1) 3-input / 1-output switches. 2) built-in 6db amplifier. 3) built-in mute. 4) sync-tip clamp inputs. 5) wide operating supply voltage range (4.5v to 13.0v). 6) low power consumption (50mw typ.). 7) excellent frequency characteristics (10mhz, 0db typ.). 8) wide dynamic range (3.5v p-p typ.). 9) low interchannel crosstalk ( ?65db typ., f = 4.43mhz). block diagram truth table 1 mute 6db amp 2 3 4 5 6 7 8 logic in1 ctla ctlb in2 gnd in3 v cc v out ba7611an 1 2 3 4 8 7 6 5 in1 ctla ctlb in2 gnd in3 v cc v out ba7611af mute logic 6db ctl - a ctl - b out l (open) l (open) in1 l (open) h in2 h l (open) in3 h h mute
2 multimedia ics ba7611an / ba7611af absolute maximum ratings (ta = 25?) parameter symbol limits unit v cc 13.5 v pd 900 * 1 (sip8) / 550 * 2 (sop8) mw topr ? 25 ~ + 75 c tstg ? 55 ~ + 125 c * 1 reduced by 9mw for each increase in ta of 1 c over 25 c. * 2 reduced by 5.5mw for each increase in ta of 1 c over 25 c. power supply voltage power dissipation operating temperature storage temperature equivalent circuits 100 w 1.2 m a 100 m a vcc in clamp input 100 w 50k w 20k w 34k w vcc ctla / b note: input bias current 1 m a [typ.] output impedance 20 w [typ.] ctla / ctlb 2ma vcc out output
3 multimedia ics ba7611an / ba7611af electrical characteristics (unless otherwise noted, ta = 25? and v cc = 5v) parameter symbol min. typ. max. unit conditions measurement circuit v cc 4.5 13.0 v fig.4 i cc 10.5 15.5 ma fig.4 v om 3.0 3.5 v p-p fig.4 g v db f = 1mhz, v in = 1.0v p-p f = 1khz, thd = 0.5 % fig.4 c t ? 65 db fig.4 c f ? 3.0 0 db fig.4 v th-a 1.0 2.0 3.0 v fig.4 v th-b 1.0 2.0 3.0 v fig.4 f = 4.43mhz, v in = 1.0v p-p f = 10mhz / 1mhz, v in = 1.0v p-p 1.0 6.0 6.5 5.5 operating voltage supply current maximum output level voltage gain interchannel crosstalk frequency characteristic ctl pin switch level a ctl pin switch level b s not designed for radiation resistance. electrical characteristic curves output voltage: v out (v p-p ) input voltage: v in (v p-p ) 2 1 0 3 4 5 7 8 9 10 6 1 0 2 3 4 56 v cc = 12v v cc = 9v v cc = 5v fig. 1 v in vs. v out (f = 1khz) measurement circuit 1 mute 6db amp 2 3 4 5 6 7 8 logic 12 1 m f 0.022 m f 47 m f osc 50 w 1 m f sw 4 v cc 1 23 sw 1 12 1 m f osc 50 w 1 m f sw 2 12 + 1 m f osc 50 w 1 m f sw 3 sw 5 v cc v cc 1 23 pp v fig. 4 a voltage gain: c f (db) frequency: f (hz) 100k 300k 1m 3m 10m 30m 100m ?2 0 2 4 6 fig. 2 frequency characteristics crosstalk: c t (db) frequency: f (hz) 100k 300k 1m 3m 10m 30m 100m ?60 ?40 ?20 0 20 ?80 fig. 3 interchannel crosstalk
4 multimedia ics ba7611an / ba7611af measurement conditions sw 1 sw 2 sw 3 sw 4 sw 5 i cc 22222 i n1 i n2 i n3 v om v om v om 1 2 2 2 1 2 2 2 1 3 3 2 3 2 3 f = 1khz, thd = 0.5 % i n1 i n2 i n3 g v g v g v 1 2 2 2 1 2 2 2 1 3 3 2 3 2 3 f = 1mhz, v = 1v p-p i n1 ? i n2 i n1 ? i n3 i n1 ? mute i n2 ? i n3 i n2 ? mute i n3 ? mute c t c t c t c t c t c t 1 1 1 2 2 2 2 2 2 1 1 2 2 2 2 2 2 1 3 2 2 2 2 2 2 3 2 3 2 2 f = 4.43mhz v = 1v p-p i n1 i n2 i n3 g f g f g f 1 2 2 2 1 2 2 2 1 3 3 2 3 2 3v = 1v p-p ctla ctlb v th v th 2 2 2 1 1 2 1 3 3 1 f = 10mhz f = 1mhz parameter symbol switch settings measurement method current dissipation ammeter maximum output level voltage gain * 2 interchannel crosstalk * 3 frequency characteristic * 4 ctl pin switching level * 5 * 1 * 1: connect a distortion meter to the output, and input a f = 1khz sine wave. adjust the input level until the output distortion is 0.5%. this output voltage at this time is the maximum output level v om (v p-p ). * 2: input a 1v p-p , 1mhz sine wave. the voltage gain is given by g v = 20 log (v out / v in ). * 3: input a 1v p-p , 4.43mhz sine wave. the interchannel crosstalk is given by c t = 20 log (v out / v in ). * 4: input 1v p-p , 1mhz and 10mhz sine waves. the frequency characteristic is given by g f = 20 log (v out (f = 10mhz) / v out (f = 1mhz)). * 5: 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 20mv p-p . external dimensions (units: mm) sip8 ba7611an ba7611af sop8 10.5 0.5 1 8 2.54 3.5 0.5 1.3 0.8 0.6 0.3 0.1 2.8 0.2 19.3 0.2 1.2 5.8 0.2 0.4 0.1 1.27 0.15 0.3min. 0.15 0.1 0.11 6.2 0.3 4.4 0.2 5.0 0.2 85 4 1 1.5 0.1
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