1
Video ICs
VCR standard audio signal processor
BA7796FS
The BA7796FS is a standard audio signal processor designed for use in VCRs and tape decks. The circuit is com-
prised of a playback preamplifier, a line amplifier, a recording amplifier, an ALC circuit, an EQ switch, and high-volt-
age head switch.
The IC has three input switching systems, and a built-in coil equivalent circuit for recording equalization, which elimi-
nates the need for an external component.
•
Applications
Video cassette recorders and tape decks
•
Features
1) Three input switching systems built-in (LINE1,
LINE2, and TUNER).
2) Built-in coil equivalent circuit for recording equaliza-
tion.
3) Two-mode EQ switch.
4) High-performance low-noise playback amplifier.
5) Fixed ALC level ( – 7.2dB when VCC = 12V).
6) Phase-inverting recording amplifier.
•
Absolute maximum ratings (Ta = 25°C)
•
Recommended operating conditions (Ta = 25°C)
Parameter Symbol Limits Unit
VCC 13 V
Pd 800
*
mW
Topr °C
Tstg °C
– 10 ~ + 65
– 55 ~ + 125
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
*
When mounted on a 90mm · 50mm · 1.6mm glass epoxy board.
Reduced by 8.0mW for each increase in Ta of 1°C over 25°C.
Parameter Symbol Min. Typ. Max. Unit
VCC 7.5 — 12.5 VPower supply voltage