
ICs for Information Equipment
s Terminal Equivalent Circuits (continued)
Pin No.
Equivalent circuit
31
VCC
500 Ω
31
100 kΩ
−VCC
27
32
3.8 V
32
500 Ω
21 kΩ
−VCC
33
VCC
33
VCC
28 kΩ
−VCC
−VCC
2.1 kΩ
−VCC
34
VCC
500 Ω
34
100 kΩ
−VCC
35
AN7090FHQ
Description
MICO :
Output pin of mic. amp.
Pin voltage
(V)
0
MDET :
Mic. mute control
Mic. NF :
0
Negative feedback pin of mic.
amp.
CDOL :
0
Output pin of L-channel CD-
ROM
11