参数资料
型号: LC550-CHIP
元件分类: 音频/视频放大
英文描述: AUDIO AMPLIFIER, UUC
封装: DIE
文件页数: 3/5页
文件大小: 150K
代理商: LC550-CHIP
3
500 - 37 - 8
MIC SUPPLY
+
S1
10
7
3
4
C2
2.2
22k
BATTERY
SIMULATOR
5
820
6
2.2k
33K
I
2
8
0.01
MIC
+
9
10k
S2
0.047
10
3.3k
1.3 V DC
1
V11
1kHz
V1
220
C3
2.2
S3
S4
RB
ITOT
4.7
VB
VO
1k
0.047
40dB
23dB
RG*
+
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
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
VB
40dB
4.7NOTE1
0.047
23dB
+
NOTE: 1. 2.2
F when receiver is ≥ 3k
All resistors in ohms, all capacitors in
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
F unless otherwise stated.
U.S. Patent No. 4,085,382, patented in other countries.
Fig.3 Functional Schematic
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