Receiver Interface - Sunsea AIoT SIMCom SIM5800 Hardware Design

MIC1P
MIC1N
EAR_MICP
GND_EARMICN
MIC2P
MIC2N
MIC_BIAS0
MIC_BIAS1
REC_P
REC_N
SPK_P
SPK_N
HPH_R
HPH_L
HS_DET

4.12.1 Receiver Interface

Module
EAR_P
EAR_N
Table 13: Performance parameters of the receiver
Test Condition
32 Ω load f = 1 kHz, 0 dB gain
SIM5800_Hardware Design_V1.01
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4 I
Microphone input , positive
5 I
Microphone input , negative
6 I
Ear_microphone input , positive
7 P
Ear_microphone input , negative (GND)
178 I
Microphone input 2, positive
177 P
Microphone input 2, negative (GND)
175 P/O Microphone bias of MIC1P/1N and MIC2P/2N
176 P/O Microphone bias of EAR_MICP
8 O Receiver output positive
9 O Receiver output negative
10 O Speaker output positive
11 O Speaker output negative
136 O Headphone output, right channel
138 O Headphone output, left channel
139 I Headphone detection
differential signal
& shielded by GND
33pF
10pF
33pF
10pF
33pF
10pF
Figure 26: Receiver reference circuit
Parameters
Output power
SNR
THD @Pout=10mW
@Pout=50mW
THD+N @Pout=10mW
@Pout=50mW
10pF
10pF
10pF
Min
35
Close to receiver
TVS
33pF
33pF
TVS
33pF
Typ Max Unit
85 - mW
92 - dB(A)
-77 dB
-74
-76 dB
-74
2018-10-08