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Smart LTE Module Series
SC650T Hardware Design
SC650T_Hardware_Design 77 / 131
DMIC_DATA
100nF
Digital MIC
R2
R1
C2
Module
DMIC_CLK
NC
MIC
_
BIAS
NC
10uF
C3
DMIC_CLK DMIC_DATA
GND VDD
L/R NC
Figure 27:Reference Circuit Design for Digital Microphone
3.23.2. Reference Circuit Design for Earpiece Interface
EAR_P
EAR_N
R2
NM_33pF
NM_33pF
C2
C3
R1
Module
D1
D2
0R
0R
NM_8.2pF
C1
NM_8.2pF
C4
Figure 28: Reference Circuit Design for Earpiece Interface