Quectel M10

M10 Hardware Design
M10_HD_V3.0 - 50 -
SPK2P
AGND
Differential layout
10pF
33pF
Close to speaker
GND
ESD
Module
22uF
Figure 30: Speaker interface configuration of AOUT2
Module
SPK2P
AGND
Differential layout
Amplifier
circuit
10pF
10pF
33pF
33pF
Close to speaker
GND
GND
ESD
ESD
C2
C1
Figure 31: Speaker interface with amplifier configuration of AOUT2
Note: The value of C1 and C2 depends on the input impedance of audio amplifier
.