AN3664NFB
ICs for VCR
■ Terminal Equivalent Circuits (continued)
Pin No.
27
Equivalent circuit
Description
NR ref. (R-channel): Refer to pin 11
GND1 (R-channel)
Voltage
Refer to pin 11
Refer to pin 10
Refer to pin 9
Refer to pin 8
5 V
Refer to pin 11
28
29
Refer to pin 9
Refer to pin 8
NR det. 2 (R-channel)
30
NR det. 1 (R-channel): Refer to pin 8
VCC1 (R-channel)
31
32
BS1 in (R-channel) and Nor. rec. in:
Audio signal
VCC1
Same as
a framed zone
in pin 4 circuit
Typical: −20 dBS (1 kHz)
(Input select)
Note) Because of using the same pin
for both R-channel BS1 and Nor. rec.
in, HiFi input is 3 input/ch. in using as
normal input.
32
Same as
a framed zone
in pin 4 circuit
50 kΩ
(BS monitor)
2.5 V
VREF
Same as
a framed zone
in pin 4 circuit
(Normal input select)
33
34
35
36
37
Refer to pin 6
Refer to pin 4
Refer to pin 4
Refer to pin 1
BS2 in (R-channel): Refer to pin 6
AUX in (R-channel): Refer to pin 4
TV in (R-channel): Refer to pin 4
E-VOL CTL (R-channel): Refer to pin 1
Normal in
Refer to pin 6
Refer to pin 4
Refer to pin 4
Refer to pin 1
2.5 V
VCC1
1 kΩ
200 Ω
150 kΩ
37
2.5 V
VREF
1 kΩ
38
Normal out
2.5 V
VCC1
38
500 Ω
39
VCC2
12 V or 9 V
16
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