Multimedia ICs
Video switch for CANAL-Plus decoder
BA7631 / BA7631F
The BA7631 and BA7631F are audio-switching ICs for ...
Multimedia ICs
Video switch for CANAL-Plus decoder
BA7631 / BA7631F
The BA7631 and BA7631F are audio-switching ICs for decoders for scrambled pay channels used in France and other countries. 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. Applications Video cassette recorders Features 1) All the audio-switching functions required for SECAM CANAL -plus decoder integrated onto one chip. 2) Inputs terminated with 65kΩ resistors. 3) Built-in output buffer.
4) Wide supply
voltage range (4.5V to 13.0V). 5) Low total harmonic distortion (0.005% Typ.). 6) Wide dynamic range (3.6Vrms, VCC = 12V). 7) Same control logic as for the BA7630S can be used.
Absolute maximum ratings
Parameter Applied
voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 13.5 1100∗ (DIP) 500∗ (SOP) – 25 ~ + 70 – 55 ~ + 125 Unit V mV °C °C
∗ Reduced by 11mW (DIP) or 5mW (SOP) for each increase in Ta of 1°C over 25°C.
Recommended operating conditions (Ta = 25°C)
Parameter Power supply
voltage Symbol VCC Limits 4.5 ~ 13.0 Unit V
1
Multimedia ICs
BA7631 / BA7631F
Block diagram
OUT1 1 BF BF 16 OUT2
CTL4
2
1 2 3
15
CTL5
IN5
3 4
SW2
14
CTL3
VCC
4 1 2
BF
13
OUT3
IN4
5 3 SW1 4 5
12
CTL2
GND2
6
11
IN3
IN1
7
1 2 SW3
10
GN...