參數(shù)資料
型號: LC550MCRO
英文描述: Analog IC
中文描述: 模擬IC
文件頁數(shù): 3/5頁
文件大?。?/td> 150K
代理商: LC550MCRO
3
500 - 37 - 8
MIC SUPPLY
+
S1
10
7
3
4
C2
2.2
22k
BATTERY
5
820
6
2.2k‰
33K
MIC
I
2
8
0.01
+
9
10k
S2
0.047
10
3.3k
1.3 V DC
1
V11
1kHz
V1
220
C3
2.2
S3
S4
R
B
I
TOT
4.7‰
V
B
V
O
1k‰
0.047
40dB
23dB
R
G
*
+
4.7
0.022
NOTES:
1. 42.13 dB of attenuation from V1 to V11
2 *RG (equivalent gnd resistance) should not exceed 30 m
(increasing RG increases distortion)
All resistors in ohms, all capacitors in
μ
F unless otherwise stated.
MICROPHONE SIMULATOR
Fig. 1 Test Circuit
2k TYP
0.047
10k
7
3
4
2.2
5
0.022
6
2
8
+
9
10
0.01
1.3 V DC
1
2.2
V
B
40dB
4.7
NOTE1
0.047
23dB
+
+
NOTE:
1. 2.2
μ
F when receiver is
3k
All resistors in ohms, all capacitors in
μ
F unless otherwise stated.
Fig. 2 Typical Hearing Aid Application
33k
4
5
27k
2.2k
2
1
3
8
9
10
6
7
All resistors in ohms, all capacitors in
μ
F unless otherwise stated.
U.S. Patent No. 4,085,382, patented in other countries.
Fig.3 Functional Schematic
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