Reference Circuit Design For Receiver Interface; Reference Circuit Design For Headset Interface - Quectel SC690A Series Hardware Design

4.18.2. Reference Circuit Design for Receiver Interface

Figure 26: Reference Circuit Design for Receiver Interface

4.18.3. Reference Circuit Design for Headset Interface

MIC_BAIS2
HS_DET
HPH_GND
Module
Figure 27: Reference Circuit Design for Headset Interface
SC690A_Series_Hardware_Design
EAR_P
EAR_M
C2
33 pF
Module
MIC2_M
MIC2_P
HPH_L
R3
20 K
HPH_R
C1
C2 C3
100 nF
33 pF 33 pF 33 pF
F1
C1
33 pF F2
D1
C3
33 pF
F1
F2
F3
F4
F5
C4
D1 D2 D3 D4
ESD
Smart Module Series
D2
1
5
4
6
3
2
R4
0 R
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