Receiver And Speaker Interface Design - Quectel M85 Hardware Design

3.8.3. Receiver and Speaker Interface Design

Module
SPK1P
SPK1N
SPK2P
Module
AGND
M85_Hardware_Design
Differential layout
Figure 28: Reference Design for AOUT1
Differential layout
22uF
Figure 29: Handset Interface Design for AOUT2
Confidential / Released
M85 Hardware Design
Close to speaker
GND
10pF
33pF
0603
0603
33pF
10pF
0603
0603
10pF
33pF
0603
0603
GND
Close to Speaker
GND
10pF 33pF
0603 0603
GSM/GPRS Module
ESD
ESD
ESD
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