SimCom SIM5300E

SIM5300E_Hardware_Design_V1.02
29
1
2
4
3
Amphenol
9001-8905-050
SPK_P
MIC_N
MIC_P
10R
68R
33pF
Close to module
Close to socket
33pF 33pF
33pF
33pF 10pF
MODULE
ESD
ANTI
The lines in bold type should
be accorded to differential
signal layout rules
ESD
ANTI
Figure 27: Earphone reference circuit
4.7.4 Audio Electronic Characteristics
Table 9: Microphone Input Characteristics
Parameter
Min
Typ
Max
Unit
Mic biasing Voltage
2.5
2.54
2.8
V
Working Current
3
mA
External Microphone Load Resistance
2.2
kΩ
Total Harmonic Distortion
-79
-65
dB
Equivalent
output noise
Gain set to 35.25dB
110
uV
Table 10: Audio Output Characteristics
Parameter
Conditions
Min
Typ
Max
Unit
Normal Output
RL=32Ω Receiver
90
mW
4.8 USIM CARD INTERFACE
4.8.1 USIM Card Application