ROHM BA7603F, BA7603 Datasheet
1
Multimedia ICs
Video signal switcher
BA7603 / BA7603F
The BA7603 and BA7603F are switching ICs developed for use in VCRs. Each contains three two-channel analog
multi-plexers. The switches have sync-tip clamped inputs and are ideal for switching video signals.
•
Applications
Video cassette recorders and televisions
•
Features
1) Three 2-input / 1-output switches.
2) Sync-tip clamped inputs.
3) 5V power supply.
4) Low power consumption (62.5mW Typ.).
5) Excellent frequency characteristics
(10MHz, 0dB Typ.).
6) Wide dynamic range (2.9V
P-P Typ.).
7) Fast switching speed (50ns Typ.).
•
Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol Limits Unit
V
°C
mW
°C
V
CC 9
500
∗
Topr
Tstg
– 40 ~ + 85
– 55 ~ + 125
Pd
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
∗
Reduced by 5.0mW for each increase in Ta of 1°C over 25°C.
•
Block diagram
OUTa
SWa
SWb
SWc
1IN2a IN1a
GND
IN2b
V
CC
CTLb
IN1b
GND
CTLa
GND
OUTb
OUTc
IN2c
16
15
14
13
12
11
10
9
2
3
4
5
6
7
8
CTLc
IN1c
L
H
IN 2
IN 1
CTL
SWa, SWb, SWc: pedestal-clamped input
Output
2
Multimedia ICs BA7603 / BA7603F
•
Equivalent circuits
R3
22k
R8
25k
R17
12k
I1
0.6mA
I2
0.3mA
I4
0.6mA
I5
1mA
R7
100
R10
100
R11
100
R13
100
R14
100
R9
200
R12
200
R16
200
R15
200
R2
4k
R1
1k
Q5
Q6
Q7 Q8 Q10 Q11
Q12
Q9
Q3
Q2
Q1
OUT
V
CC
IN
SWa, SWb, SWc
R3
400
R4
400
R5
25k
R2
200
Q3
Q1
Q5
Q6
Q2 Q4
CTL
R6
25k
R1
50k
V
CC
I2
0.6mA
I1
0.25mA
I3
0.06mA
CTL
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