ICs for VCR
s
Pin Descriptions (cont.)
Pin No.
PIn name
DC voltage (V
CC
=5V)
Equivalent circuit
(For playback)
15
200Ω
AN3389SB
Description
15
HOLD
1.25V
(PB)
0.1µF
Peak hold of automatic tracking
interface peak detection integration
signal for the playback mode. An
external capacitor is connected to
this pin for peak hold function.
(For
recording)
MIN
DCFB
2.2V
(Rec)
100Ω
15
150Ω
100Ω
15
0.1µF
Connecting to an external capacitor
for recording amplifier DC voltage
feedback at the recording mode
46KΩ
17
18
AGCTL
VGCTL
2.5V
2.8KΩ
17
18
2.8KΩ
46KΩ
2.5V
Gain control of automatic tracking
interface amplifiers.Pin17(AGCTL)
controls the gain in the audio mode,
and Pin18 (VGCTL) controls the
gain in the video mode.
(For
playback)
AUDIO
-IN
2.5V for
playback,
and
0.7V for
recording
200Ω
20kΩ
19
19
Automatic tracking interface audio
FM signal input
(For
recording)
MUTE
20
SW
20
200Ω
20kΩ 25kΩ
25kΩ
10kΩ
Mute control for the recording
mode. Muting is on at low and OFF
at high (open).
7
PANASONIC [ PANASONIC SEMICONDUCTOR ]
