Quectel 5G Module Series - Loudspeaker Application

5G Module Series
5G-REDCAP_EVB_User_Guide 22 /
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Figure 12: Audio Interfaces of the EVB
3.4.1.1. Loudspeaker Application
Audio interface J1706 is designed for loudspeakers and the following figure shows a reference design of
loudspeaker with an external audio amplifier.
Figure 13: Reference Circuit Design for Loudspeaker Application
Handset
J0501
Codec TE-A
J0502
J1706
Loudspeaker
Earphone
J0503
LOUDL/P
LOUDR/N
Differential layout
Amplifier
circuit
Close to speaker
GND
GND
Codec
FB
FB
C1
C2
J1706
CS8122S
BTB CON
J0502