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BA7625

Rohm
Part Number BA7625
Manufacturer Rohm
Description Video signal switcher for AV amplifiers
Published Apr 1, 2005
Detailed Description Multimedia ICs Video signal switcher for AV amplifiers BA7625 The BA7625 is a video signal switch that contains two fiv...
Datasheet PDF File BA7625 PDF File

BA7625
BA7625

Overview
Multimedia ICs Video signal switcher for AV amplifiers BA7625 The BA7625 is a video signal switch that contains two five-channel analog multiplexers and wide-band 6dB amplifiers.
It designed for use in video cassette recorders.
By simply adding transistor buffers to the outputs,it is possible to construct arecord / playback switch for two record / playback VCRs, and three video playback machines (eg.
laser disk players).
Input switching and VCR record switching can be done independently.
The BA7625 has sync-tip clamp inputs which are ideal for switching video signals.
Applications • AV amplifiers and video selectors Features • 1) 5-input / 3-output switches.
2) Sync-tip clamp inputs.
3) Built-in 6dB amplifiers.
4) 5V supply voltage.
•Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 9 500∗ – 25 ~ + 70 – 55 ~ + 125 Unit V mW °C °C ∗ Reduced by 5mW for each increase in Ta of 1°C over 25°C.
1 Multimedia ICs BA7625 •Block diagram Monitor OUT GND IN5 GND IN4 CTL E IN3 CTL D 1 2 3 4 5 6 7 logic 6dB logic 16 15 14 13 12 11 10 9 IN1 CTL A VOUT1 VCC IN2 CTL B VOUT 2 CTL C 6dB 8 •Truth table A L H L H H B L L H H H E Monitor OUT IN1 IN2 IN3 IN4 IN5 C L H L H H D L L H H H E VOUT1 — IN2 IN3 IN4 IN5 C L H L H H D L L H H H E VOUT2 IN1 — IN3 IN4 IN5 ∗ ∗ ∗ L H ∗ ∗ ∗ L H ∗ ∗ ∗ L H Note 1: ∗ indicates "don't care" (H or L).
2 Multimedia ICs BA7625 •Equivalent input / output circuits Input circuit Waveform IN1 ~ IN5 Vcc R1 R2 200 Q1 IN 200 1VP-P Q2 Q3 + V DC 2.
0V V1 2.
7V I1 100µA CTLA ~ CTLE IN Vcc R1 2k R2 R3 58k O1 Q1 R4 38k 58k Q2 Vcc = 5.
0V High level 3.
3V Low level 2.
1V Monitor OUT Vcc Q1 R1 R2 17k 100 Q4 MONOUT Q2 Q3 Q5 1.
4mA DC 0.
5V 2VP-P VOUT1 , VOUT2 Vcc I1 R1 Q1 R2 100 Q3 O1 DN I2 600µA 1.
4mA Q2 Q4 DC 0.
5V VOUT 2VP-P 25BUR 48k VOUT1 3 Multimedia ICs BA7625 CC •Electrical characteristics (unless otherwise noted, Ta = 25°C and V Para...


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