GE570 Просмотр технического описания (PDF) - Gennum -> Semtech
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GE570 Datasheet PDF : 7 Pages
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VB
18
8
REGULATOR
0µ1
0µ22
7
1M
SLOW
AVERAGE
DETECTOR
10n
2
1M
FAST
AVERAGE
DETECTOR
1
6
5
53k5 85k6
4
3
19
1
CONTROL
RECTIFIER
X
50k
RAGC_IN
11
0µ2
10k
Any Knowles
or
Microtronics
microphone 9
12 dB / Oct
-A
(24 dB / Oct)
BAND SPLIT
FILTER
12k
14k
10
12
13
All resistors in ohms, all capacitors
in microfarads, unless otherwise stated
0µ1
RH
High Frequency
Expander / Compressor
-B
RL
Low Frequency
Expander / Compressor
14
16
VB
VB
48k
20
-C
0µ1
48k
8k4
15
17
Any
Knowles
Class D
receiver
0µ22
R 100k Log
VC
Fig. 3 Minimum Component Hearing Instrument Application
VB=1.3V
0µ22
10n
18
7
2
1M
1M
8 REGULATOR
SLOW
AVERAGE
FAST
AVERAGE
2µ2
DETECTOR DETECTOR
RHI2=0
RLO2=0
1
6
5
RHI1 RLO1
4
3
19
RTH= ∞
50k
11
3.9k 0µ2
10k
Pink Noise
Generator
or
1kHz for I/O 9
1
CONTROL
RECTIFIER
X
RAGC_IN
RH
12 dB / Oct
High Frequency
-A
(24 dB / Oct)
Expander / Compressor
-B
BAND SPLIT
FILTER
12k
14k
RL
Low Frequency
Expander / Compressor
10
12
13
14 16
VB
48k
-C
8k4
20
48k
0µ1
50k
15
17
All resistors in ohms, all capacitors
in microfarads, unless otherwise stated
0µ1
Rƒc=100k
0µ22
RVC=100k
GS3027
(GS3028)
RMPO=0
Fig. 4 Characterization Circuit (Used to generate typical curves)
522 - 07 - 00
4
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