Nokia 6310i Service Manual page 89

PAMS Technical Documentation
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Parameter
Microphone amplifier input resistor
Differential input voltage range for MIC1
input, G =20 dB
Receive Common mode input voltage
range for MIC input
Common mode voltage level
Differential mode voltage range for
microphone amplifier, at gain = 20dB
Differential load resistance for the
microphone input stage
Transmit gain absolute accuracy
Transmit gain variation with programmed
gain, temperature and supply
Common mode rejection ratio
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Microphone input specifications
Symbol
R
M30
V
IN1
V
HFCM
V
CM
V
OUT
R
OS
GXA
GXAGT
V
CMRR
1RNLD &RUSRUDWLRQ
3 - Audio System
Min Typ Max
30 50
200 1200
100
1.3 1.35 1.4
2.0
30 450
-1.0 0.0
-0.7 0.7
45 60
NPL-1
Unit
kOhm
m V
PP
m V
PP
V
V
PP
kOhm
dB
dB
dB
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