ROHM BA7626F Datasheet
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 terminated with 20kΩ 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) 20kΩ input impedance.
3) Built-in 6dB amplifiers.
4) 5V supply voltage.
•
Absolute maximum ratings (Ta = 25°C)
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 VOUT1
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 VOUT2
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°C and VCC = 5V)
VCC
IN
4.3V 30k
2k
50kD50k
30k
20k
QN
QN
QN
QP
QN
200
100µA
VCC
CTL
MONOUT
QN20
QN6
100
17k
QNQN2
QN3
VCC
VOUT
QN20
QN15
100
40k
QN
QN5
VCC
200µA
D
600µA
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
2.0VMONOUT1
2.0V
10
14
V
OUT2
V
OUT1
Pin name Standard voltage (no input signal) Equivalent input / output circuit
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