1
ICs for VCR
n Overview
The AN3336SB is a recording/playback amplifier IC for
4-head VCR. It includes RF-AGC, automatic tracking I/O,
and envelope comparing circuit.
n Features
• Playback V
CC
= 5.0V, recording V
CC
= 12V
• Built-in RF-AGC circuit
• Built-in automatic tracking I/O circuit
• Built-in envelope comparing circuit
AN3336SB
4-Head VCR Recording/Playback Amplifier IC
Unit : mm
36-Pin SSOP package (SSOP036-P-0450A)
0.5
15.2
–
0.30
11.93– 0.30
0.3
–
0.11
2.85
–
0.2
0.8
1.3
–
0.25
0.2
+ 0.1 – 0.05
1.3
–
0.25
0.1
–
0.1
(0.28)
8.4– 0.30
1
18 19
36
Head switching
Envelope ON/OFF switching
Ch 1 head amp. damping
Ch 1 head amp. input
Small-signal ground
Ch 2 head amp. input
Ch 2 head amp. damping
Sub-ground
Sub-ground
Ch 3 head amp. damping
Ch 3 head amp. input
Small-signal ground
Ch 4 head amp. input
Ch 4 head amp. damping
Rec. current amp. (LP) output
Rec. feedback
Rec. current amp. (SP) output
Rec. VCC
Pin No.
1
2
3
4
5
Pin name Pin namePin No.
6
7
8
9
10
25
26
27
28
11
12
13
14
15
29
30
31
32
33
Evelope detector capacitor for ch 3 and ch 4
Peaking for recording
Automatic tracking output
Automatic tracking detector capacitor
Automatic tracking control
Automatic tracking VCC
Rec. Y–input
Chroma output
Sub-ground
Sub-ground
Sub-ground
Recording C–input
AGC output
AGC detector capacitor
Envelope detector capacitor for ch 1 and ch 2
Head amp. switching
ENV output, recording bias
Playback VCC
n Pin Descriptions
16
17
18
19
20
34
35
36
21
22
23
24