GP509 查看數據表（PDF） - Gennum -> Semtech
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GP509 Datasheet PDF : 4 Pages
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VMIC 4
3
A IN
VB
5
RMIC
21k
6
-A
-B
B OUT
7 RE
RE
1
8
A OUT B IN
2
GND
Fig. 2 Functional Schematic
V =1.3VDC
B
RMIC
4
1.0
Rs 3k9
CS
0.22
-A
3
100k
RVC
5
21k
-B
6
1
8
7
RE
2
All resistors in ohms, all capacitors in farads unless otherwise stated.
ED1913
RLAC
82
Gain of Stage
A = 20 Log
10
RVC
RS
Gain of Stage
B = 20 Log
10
RLAC
// 21K
RE // 82
Fig. 3 Typical Hearing Aid Circuit
3
510 - 71 - 04
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