PAMS Technical Documentation
3 - Audio System
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Microphone input specifications
Parameter
Symbol
Min
Typ
Max
Unit
Microphone amplifier input resistor
R
M30
30
50
kOhm
Differential input voltage range for MIC1
input, G =20 dB
V
IN1
200
1200
m V
PP
Receive Common mode input voltage
range for MIC input
V
HFCM
100
m V
PP
Common mode voltage level
V
CM
1.3
1.35
1.4
V
Differential mode voltage range for
microphone amplifier, at gain = 20dB
V
OUT
2.0
V
PP
Differential load resistance for the
microphone input stage
R
OS
30
450
kOhm
Transmit gain absolute accuracy
GXA
-1.0
0.0
dB
Transmit gain variation with programmed
gain, temperature and supply
GXAGT
V
-0.7
0.7
dB
Common mode rejection ratio
CMRR
45
60
dB
Содержание 6310I - Cell Phone - GSM
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