mitsumi pedestal clamp 2-input 1-output 3-circuit video switch MM1389 pedestal clamp 2-input 1-output 3-circuit video switch monolithic ic MM1389 outline this is a video switch ic developed for use in video cameras, with 2-input and 1-output circuits. it has pedestal clamp input, making it ideal for rgb and video signal switching, features 1. pedestal clamp input 2. low current consumption 12ma typ.(v cc 5v) 3. frequency response 10mhz typ. 0db 4. operating power supply voltage 4.5~12v package sop-16b (MM1389xf) applications 1. tv 2. vcr 3. other video equipment block diagram sw out in2a l in2b in2c in1a h in1b in1c control input truth table
mitsumi pedestal clamp 2-input 1-output 3-circuit video switch MM1389 pin description pin no. pin name function internal equivalent circuit diagram 1 in2a input pin 2swa 8 in2c input pin 2swc 9 in1c input pin 1swc 11 in1b input pin 1swb 14 in2b input pin 2swb 16 in1a input pin 1swa 2 c t la switching pin a 7 c t lb switching pin b 12 c t lc switching pin c 3 outa output pin swa 5 outb output pin swb 6 outc output pin swc 4 gnd gnd pin 1 15 gnd gnd pin 2 10 clamp pulse clamp pulse input pin 13 v cc power supply voltage pin
mitsumi pedestal clamp 2-input 1-output 3-circuit video switch MM1389 absolute maximum ratings (ta=25 c) item symbol ratings units storage temperature t stg - 40~+125 c operating temperature t opr - 25~+75 c power supply voltage v cc max. 15 v allowable loss pd 350 mw recommended operating conditions item symbol ratings units operating temperature t opr - 25~+75 c operating voltage v op 4.5~12.0 v electrical characteristics (except where noted therwise, ta=25 c, v cc =5.0v) item symbol measurement conditions min. typ. max. units consumption current i d refer to measuring circuit 12.0 17.0 ma voltage gain g v refer to measuring circuit - 0.5 0 +0.5 db frequency characteristic f c refer to measuring circuit - 10+1db dynamic range 1 v d 1 refer to measuring circuit 1.40 1.65 v p - p dynamic range 2 v d 2 refer to measuring circuit 0.80 0.95 v p - p crosstalk c t refer to measuring circuit - 70 - 60 db switch input voltage h v ih refer to measuring circuit 2.1 v switch input voltage l v il refer to measuring circuit 0.7 v clamp pin input voltage h v cth refer to measuring circuit 2.1 v clamp pin input voltage l v ctl refer to measuring circuit 0.7 v v d 1 : positive dynamic range (from clamp level) v d 2 : negative dynamic range (from clamp level)
mitsumi pedestal clamp 2-input 1-output 3-circuit video switch MM1389 measuring procedures (except where noted otherwise, v cc =5.0v, v c 1=v cc , v c 2=0v, pulse=v cc , c1~c6=0.1f, impress v b =3.5v when s9 is 2) item symbol switch state notes s1 s2 s3 s4 s5 s6 s7 s8 s9 s10~s15 consumption current i d 22 22 22221 2 12 22 22112 1 21 22 22212 1 voltage gain g v 22 12 22122 1 22 21 22222 1 22 22 12132 1 22 22 21232 1 12 22 22112 1 21 22 22212 1 frequency fc 22 12 22122 1 characteristic 22 21 22222 1 22 22 12132 1 22 22 21232 1 12 22 22111 2 21 22 22211 2 dynamic v d 1 221222121 2 range 1, 2 v d 2 222122221 2 22 22 12131 2 22 22 21231 2 12 22 22112 1 21 22 22212 1 crosstalk c t 22 12 22122 1 22 21 22222 1 22 22 12132 1 22 22 21232 1 1 2 2 2 2 2 1 1 2 1, 2 2 2 1 2 2 2 1 2 2 1, 2 switch input v ih 2 2 2 2 1 2 1 3 2 1, 2 voltage h, l v il 2 1 2 2 2 2 1 1 2 1, 2 2 2 2 1 2 2 1 2 2 1, 2 2 2 2 2 2 1 1 3 2 1, 2 clamp pin input v cth 22 22 22112 1 voltage h, l v ctl 22 22 22122 1 22 22 22132 1 vd1: positive dynamic range (from clamp level) vd2: negative dynamic range (from clamp level)
mitsumi pedestal clamp 2-input 1-output 3-circuit video switch MM1389 (except where noted otherwise, v cc =5.0v, v c 1=v cc , v c 2=0v, pulse=v cc , c1~c6=0.1f, impress v b =3.5v when s9 is 2) item symbol measurement conditions notes consumption current i d voltage gain g v f=100khz v=2.0v p - p 10mhz/100khz frequency characteristic f c v=2.0v p - p dynamic range 1, 2 v d 1 v d 2 crosstalk c t f=4.43mhz v=2.0v p - p switch input voltage h, l v ih v il clamp pin input voltage h, l v cth v ctl connect a dc ammeter to the v cc pin and measure. the ammeter is shorted for subsequent measurements. input a 2.0v p - p , 100khz sine wave to sg, and obtain g v from the following formula given tp1 voltage as v1 and tp3 voltage as v2. g v =20log (v2/v1) db for the above g v measurement, given tp3 voltage for 10mhz as v3, f c is obtained from the following formula. f c =20log (v3/v2) db input a video signal to sg and a 5v p-p clamp pulse to pulse. given input amplitude on the positive side of clamp level v c as v d 1 in , and output amplitude as v d 1 out and negative side input amplitude as v d 2 in , and output amplitude as v d 2 out , v d 2 is obtained from the following formula. v d 1 : 20log (v d 1 out /v d 1 in ) < = v d 1 in for - 1db v d 2 : 20log (v d 2 out /v d 2 in ) < = v d 2 in for - 1db input a 2.0v p - p , 4.43mhz sine wave to sg, and given tp1 voltage as v4 and tp3 voltage as v5, c t is obtained from the following formula. c t =20log (v5/v4) db make s10, s12 and s14 1, and s11, s13 and s15 2. input a 2.0v p - p , 100khz sine wave to sg, and raise gradually from v c 1=0v. tp4 voltage when the sg signal appears on tp2 is vin. next, reverse s10~s15 settings and lower gradually from v c 1=v cc . tp4 voltage when the sg signal appears on tp2 is v il . impress 4v on vb and raise gradually from pulse=0v. tp11 voltage when less than 2.0v appears on tp2 is v cth . lower from pulse=v cc , and tp11 voltage when more than 2.2v appears on tp2 is v ctl .
mitsumi pedestal clamp 2-input 1-output 3-circuit video switch MM1389 measuring circuit
mitsumi pedestal clamp 2-input 1-output 3-circuit video switch MM1389 application circuits
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