ROHM BA7632AF Datasheet
1
Multimedia ICs
Video switch for CANAL-Plus decoder
BA7632AF
The BA7632AF is an audio-switching ICs for decoders for scrambled pay channels used in France and other contries. The ICs include a five-input multiplexer, a four-input multiplexer and a two-input multiplexer, and allow decoder
audio switching to be done with a single IC. When used in combination with the BA7630S common logic control can
be used for audio and video switching.
䊊The BA7632AF has larger termination resistors on the inputs than the BA7631 and BA7631F.
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Applications
Video cassette recorders
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Features
1) All the audio-switching functions required for SECAM
CANNAL-plus decoder integrated onto one chip.
2) Inputs terminated with 140kΩ resistors.
3) Built-in output buffer.
4) Wide supply voltage range (4.5V to 13.0V).
5) Low total harmonic distortion (Max. 0.005% Typ.).
6) Wide dynamic range (3.6V
rms, VCC = 12V).
7) Same control logic as for the BA7630S can be used.
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Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol Limits Unit
V
CC
13.5 V
Pd 500
∗
mV
Topr °C
Tstg °C
– 25 ~ + 70
– 55 ~ + 125
Applied voltage
Power dissipation
Operating temperature
Storage temperature
∗
Reduced by 5mW for each increase in Ta of 1°C over 25°C.
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Recommended operating conditions (Ta = 25°C)
Parameter Symbol Limits Unit
V
CC
4.5 ~ 13.0 VPower supply voltage
116
BF
BF
BF
1
2
3
4
1
2
3
4
5
1
2
15
14
13
12
11
10
9 IN2
2
3
4
5
6
7
8
BA7632AF
OUT1
CTL4
IN5
IN4
GND2
IN1
CTL1
OUT2
CTL5
CTL3
OUT3
CTL2
IN3
GND1
SW2
SW1
SW3
V
CC
2
Multimedia ICs BA7632AF
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Truth table
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Pin descriptions
SELECT
LLL
LHL
HLL
H H L MUTE
∗∗
H
CTL1 CTL2 CTL5
IN1
IN2
IN3
IN5
OUT1 SW1
∗
Don't care
SELECT
LL
HL
LH
HH
CTL3 CTL5
IN1
IN3
IN5
IN3
OUT2 SW2
SELECT
L
H
CTL4
IN2
IN4
OUT3 SW3
1
2
3
4
5
6 GND2
7
8
9
10 GND1
11
12
13
14
15
16 OUT2
CTL5
CTL3
OUT3
CTL2
IN3
IN2
CTL1
IN1
IN4
IN5
CTL4
OUT1
Pin No.
V
CC
Pin Name Function
Output 1
Control 4
Input 5
Power supply
Input 4
GND (GND1 common)
Input 1
Control 1
Input 2
GND (GND2 common)
Input 3
Control 2
Output 3
Control 3
Control 5
Output 2
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Block diagram
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