AN7500FHQ データシートの表示（PDF） - Panasonic Corporation
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AN7500FHQ Datasheet PDF : 16 Pages
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ICs for Radio-Cassette, Cassette Deck
AN7500FHQ
s Terminal Equivalent Circuits (continued)
Pin No.
Equivalent circuit
8
29
VREF
Pin 8
29
100 kΩ
160 Ω
VRPF
Description
Pin 8: SB out (R)
Pin 29: SB out (L):
Sub-buffer amp. output
When pin 10 is open or of high
voltage and output is connected to
VREF with 100 kΩ, the buffer amp.
does not operate.
Waveform/voltage
(at VCC = 1.2 V)
At SB on
RO = 160 Ω (typ.)
At SB off
RIN = 100 kΩ (typ.)
DC 0.78 V
GND
9
28
VREF
86
kΩ
Pin 9
28
VRPF
Pin 9: SB in (R)
Pin 28: SB in (L):
Sub-buffer amp. input
RIN = 86 kΩ (typ.)
DC 0.78 V
GND
10
50 kΩ
VRPF
SB CNT:
Sub-buffer amp. on/off control
SB off
RIN = 6 kΩ
DC 0.78 V
Pin open or high voltage:
10
20 kΩ 20 kΩ
20 kΩ
0.8 V < V10-19 < VCC +0.3 V
SB on
Low voltage:
− 0.3 V < V10-19 < 0.4 V
11
50 kΩ
11
10 kΩ
50 kΩ
GND
VRPF
L-BST CNT:
Low boost on/off control
L-BST on
Pin open
L-BST off
Low voltage:
− 0.3 V < V10-19 < 0.3 V
DC 0 V
GND
9
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