ICs for VCR
AN3664NFB
■ Terminal Equivalent Circuits (continued)
Pin No.
Equivalent circuit
VCC1
10 kΩ
Description
NR ref. (L-channel):
Voltage
11
2.5 V
This pin specifies a reference voltage
for HiFi signal system.
10 kΩ
12.9 kΩ
5 kΩ 5 kΩ
Pin 11,
27
12 kΩ
733 Ω
3.9 kΩ
500 Ω
L-channel Pin 12
R-channel Pin 26
12
CCA out (L-channel):
Audio signal
2.5 V
VCC1
1 kΩ
L-channel Pin 11
R-channel Pin 27
Typical: −20 dBS (1 kHz)
Same as
Pin
12, 26
aframed
zone in
pin 4
12 kΩ
3.9 kΩ
circuit
R1, R2 =
2.5 kΩ
1.5 kΩ
1.5 kΩ
10 kΩ
13
Emph. NF (L-channel)
2.5 V
NR
VCC1
In recording, it enables you to evalu-
ate without an external capacitor as a
monitor pin for encode output.
Typical: −11 dBS (1 kHz)
To VREF
10kΩ
10 kΩ
Pin
13, 25
50 Ω
50 Ω
R3
2 kΩ
The time constant in FM emphasis is
determined by an external capaci-
tance and an inside resistor.
R4
3.6 kΩ
L-ch.: R3 = 6.03 kΩ, R4 = 7.91 kΩ
R-ch.: R3 = 6.07 kΩ, R4 = 7.5 kΩ
2.5 kΩ
14
N.C.
13
PANASONIC [ PANASONIC ]
