Quectel Smart EVB G2 User Manual

Smart LTE Module Series
Smart EVB G2 User Guide
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ESD
ESD
100pF
EAR_P
EAR_N
FB
Samrt-EVB-G2
Earphone
33pF
33pF
J1201
Figure 30: Reference Circuit Design for Earphone Interface
4.7.4. Microphone Interfaces
Smart EVB G2 provides one single-ended and one differential microphone inputs for microphone
interfaces. The single-ended microphone input is for MEMS-Type microphone and the differential
microphone input is for ECM-Type microphone. The following figures show a reference circuit design for
microphone interfaces and the two microphones.
Figure 31: Reference Circuit Design for Microphone Interfaces
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Quectel Smart EVB G2 Specifications

General

Brand	Quectel
Model	Smart EVB G2
Category	Motherboard
Language	English