Quectel M10

M10 Hardware Design
M10_HD_V3.0 - 49 -
3.9.3. Receiver and speaker interface configuration
SPK1P
SPK1N
Differential layout
10pF
10pF
33pF
33pF
33pF
Close to speaker
GND
GND
10pF
ESD
ESD
Module
Figure 28: Speaker interface configuration of AOUT1
SPK1P
SPK1N
Differential layout
Amplifier
circuit
10pF
10pF
33pF
33pF
33pF
Close to speaker
GND
GND
10pF
ESD
ESD
Module
Figure 29: Speaker interface with amplifier configuration of AOUT1
Texas Instruments TPA6205A1is recommended for a suitable differential audio amplifier. There
are plenty of excellent audio amplifiers in the market.