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Control Unit
GSM Series
Audio design manual
Spk Reference Circuit - Quectel GSM Series Audio Design Manual
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2.1.3.3. SPK Reference Circuit
Module
LOUDSPKP
LOUDSPKN
GSM Module Audo Design Guide
Differential
layout
10pF
10pF
10pF
Figure 10：SPK Reference Circuit
GSM Module Audio Design Guide
Close to Speaker
GND
33pF
0R
33pF
0R
33pF
GND
Confidential/Release
GSM/GPRS Modules
ESD
8 ohm
ESD
15 / 35
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This manual is also suitable for:
Gprs series
M1x
M95
M80
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