Receiver Interface Design; Earphone Interface Design - Quectel M35 User Manual

3.8.3. Receiver Interface Design

Module

3.8.4. Earphone Interface Design

MIC2N
MIC2P
Module
LOUDSPKP
AGND
AGND
M35_User_Manual
Differential layout
SPK1P
SPK1N
Figure 25: Reference Interface Design of AOUT1
Close to Module
GND
10pF 33pF
0603 0603
10pF 33pF
0603 0603
10pF 33pF
0603 0603
GND
0R
22uF
Figure 26: Earphone Interface Design
Confidential / Released
Close to speaker
10pF
0603
10pF
0603
10pF
0603
Close to Socket
Differential
4.7uF
layout
10pF
0603
68R
10pF 33pF
0603
0603
GND
GND
GSM/GPRS Module Series
M35 User Manual
GND
33pF
ESD
0603
33pF
0603
33pF
ESD
0603
GND
GND
GND GND
33pF
ESD
0603
3
4
ESD
2
1
Amphenol
9001-8905-050
AGND
GND
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