6-Head VCR Recording/Playback Amplifier IC
Description
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 VCC = 5.
0V, recording VCC = 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.
VCC 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 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
1.
3±0.
25
(0.
28)
2.
85±0.
2
15.
2±0.
30
1
AN3336SB
s Block Diagram
PB 5V VCC
ICs for VCR
+
HASW ENV
C– IN
Y– IN
AT GCA
AT OUT
SUB– GND MAIN– GND
1.
5kΩ
0.
1µF 0.
01µF
0.
1µF
33kΩ
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
Det.
AGC CHROMA Amp.
Det.
LOG
Mix.
Comp.
Det.
SP L H
Det.
LP H L
Rec Logic H L L H LP SP
HA1
HA2
HA3
HA4 PB ON PB ON
1
2
3 + 1µF
4
5
6
7 + 1µF
8
9
10
1µF
11
12
13
14 + 1µF
15
0.
1µF
16
17
18 +
0.
01µF 0.
01µF
+
0.
01µF 0.
01µF
0.
01µF 0.
1µF
* 100Ω
HSW
* 100Ω
SUB–GND
* 100Ω
* 10...
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