ICs for VCR
AN3336SB
4-Head VCR Recording/Playback Amplifier IC
s
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.
0.3±0.11
1
36
Unit : mm
s
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
0.8
18
19
1.3±0.25
0.1
0.2
+ 0.05
–
0.1±0.1
0.5
8.4±0.30
11.93±0.30
36-Pin SSOP package (SSOP036-P-0450A)
s
Pin Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Pin name
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. V
CC
Pin No.
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Pin name
Evelope detector capacitor for ch 3 and ch 4
Peaking for recording
Automatic tracking output
Automatic tracking detector capacitor
Automatic tracking control
Automatic tracking V
CC
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 V
CC
1.3±0.25
(0.28)
2.85±0.2
15.2±0.30
1