AN3336SB Datasheet, PDF (5/5 Pages) Panasonic Semiconductor – 4-Head VCR Recording/Playback Amplifier IC

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
100 125 150
Ambient temperature Ta (˚C)
5