1
Video ICs
CTL recording / playback amplifier
for VHS VCRs
BA8400FV
The BA8400FV is a CTL recording / playback amplifier developed for VHS VCRs. The playback amplifier has an
AGC circuit that can handle large input signal fluctuations, and a recording / playback switching circuit is provided to
allow high-speed switching.
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Applications
VHS-format VCRs
•
Features
1) Can be operated off low power supply voltage (2.7V
to 3.5V).
2) Playback amplifier with AGC.
3) Fast switching between recording and playback.
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Block diagram
SW
P R
PR PR
Ref
REC AMP
AGC AMP
DET
14
1
13
2
12
3
11
4
10
5
9
6
8
7
CTL OUT
V
CC
FILTER HysBIAS AGC MONI OUT IN – BIAS
RECHPB
RECIN
GND
CTL + CTL –
RECPBGND