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Quectel M20

Quectel M20
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M20 Hardware Design
3.10.2 Speaker interface configuration
SPK1P
SPK1N
Differential layout
10pF
10pF
33pF
33pF
33pF
Close to speaker
GND
GND
10pF
ESD
ANTI
ESD
ANTI
Moudule
Figure 27: Speaker interface configuration of AOUT1
SPK1P
SPK1N
Differential layout
Amplifier
circuit
10pF
10pF
33pF
33pF
33pF
Close to speaker
GND
GND
10pF
ESD
ANTI
ESD
ANTI
Module
Figure 28: Speaker interface with amplifier in AOUT1
M20_HD_V1.01 - 51 -
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