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PDF AN3336SB Data sheet ( Hoja de datos )
| Número de pieza | AN3336SB | |
| Descripción | 4-Head VCR Recording/Playback Amplifier IC | |
| Fabricantes | Panasonic Semiconductor | |
| Logotipo |  |
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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.
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
1
18
Unit : mm
36
19
s Pin Descriptions
Pin No.
Pin name
1 Head switching
2 Envelope ON/OFF switching
3 Ch 1 head amp. damping
4 Ch 1 head amp. input
5 Small-signal ground
6 Ch 2 head amp. input
7 Ch 2 head amp. damping
8 Sub-ground
9 Sub-ground
10 Ch 3 head amp. damping
11 Ch 3 head amp. input
12 Small-signal ground
13 Ch 4 head amp. input
14 Ch 4 head amp. damping
15 Rec. current amp. (LP) output
16 Rec. feedback
17 Rec. current amp. (SP) output
18 Rec. VCC
0.5 (0.28)
8.4±0.30
11.93±0.30
36-Pin SSOP package (SSOP036-P-0450A)
Pin No.
Pin name
19 Evelope detector capacitor for ch 3 and ch 4
20 Peaking for recording
21 Automatic tracking output
22 Automatic tracking detector capacitor
23 Automatic tracking control
24 Automatic tracking VCC
25 Rec. Y–input
26 Chroma output
27 Sub-ground
28 Sub-ground
29 Sub-ground
30 Recording C–input
31 AGC output
32 AGC detector capacitor
33 Envelope detector capacitor for ch 1 and ch 2
34 Head amp. switching
35 ENV output, recording bias
36 Playback VCC
1
1 page  
ICs for VCR
AN3336SB
2. Recording mode
Pin18 (recording VCC) =12V typ.
}Pin36 (playback VCC)
Pin24 (automatic tracking VCC)
Opened or grounded
Pin35 : Recording internal bias current control
How to control : 35
R
• When the external resistance decreases, the internal circuit bias current
(Itotal) increases.
• R should be 27 to 33kΩ.
HASW control at Pin34
HASW Pin34 SP output LP output
H OFF active
L
active
OFF
Pin11,13
GND
Diode
Pin4,6
Diode
GND
Pin19
Open
GND
s Reference
2.000
1.800
1.600
1.449
1.400
1.200
1.000
833
800
600
400
200
0
0
PD—Ta
On glass-epoxy print board
(50mm × 50mm × t 0.8mm)
Rthj–a=69˚C/W
PD=1449mW(25˚C)
IC without heatsink
Rthj–a=120˚C/W
PD=833mW (25˚C)
25 50 75 100 125
Ambient temperature Ta (˚C)
150
5
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet AN3336SB.PDF ] | |
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