Receiver And Speaker Interface Application - Quectel UC15 Hardware Design

3.11.3.

Receiver and Speaker Interface Application

Module
SPK1P
SPK1N
Figure 23: Reference Design with an Amplifier for AOUT1
Texas Instruments TPA6205A1 is recommended for a suitable differential audio amplifier. There are
plenty of excellent audio amplifiers in the market.
UC15_Hardware_Design
Figure 22: Reference Design for AOUT1
Differential layout
Amplifier circuit
Confidential / Released
UMTS/HSDPA Module Series
UC15 Hardware Design
Close to speaker
GND
10pF
33pF
0603
0603
33pF
10pF
0603
0603
10pF
33pF
0603
0603
GND
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