Reference Circuit Design For Earpiece Interface - Quectel SC66 Hardware Design

MIC_ BIAS
MIC_GND
MIC3_P
Module
Figure 31: Reference Circuit Design for MEMS-type Microphone

3.22.2. Reference Circuit Design for Earpiece Interface

EAR_P
EAR_M
Module
Figure 32: Reference Circuit Design for Earpiece Interface
SC66_Hardware_Design
Smart LTE Module Series
SC66 Hardware Design
C4
F1
100nF
R1
0R
R2
0R D1
C2
33pF
C2
33pF
F1
C1
33pF
F2
D2
D1
C3
33pF
D2
1
2
VDD
GND
3
GND
OUT
4
MEMS-
type
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