
ICs for Radio-Cassette, Cassette Deck
s Terminal Equivalent Circuits (continued)
Pin No.
Equivalent circuit
Description
17
VRPF AGC TAU:
AGC time constant
17
AN7500FHQ
Waveform/voltage
(at VCC = 1.2 V)
18
21
Pin 18
21
60 kΩ
4 kΩ
GND
VCC
Pin 18: PWR out (L)
Pin 21: PWR out (R):
Power amp. voltage output
GND
19
GND pin
20
VCC power supply pin
22
15 kΩ
VRPF L-BST C:
Low boost capacitor pin
7.5 kΩ
22
7.5 kΩ
15 kΩ
VREF
23
45 kΩ
GND
VRPF
LPF2-C:
LPF2 capacitor pin
15 kΩ
23
7.5
kΩ
VREF
GND
DC 0.6 V
0V
1.2 V
DC 0.78 V
DC 0.78 V
11