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GSM0128IG001
39
Revision Draft – 9/22/08
6.9.3
Handset Speaker Output (Pins 9, 13)
Parameter
Test Conditions
MIN
TYP
MAX
UNIT
Earphone output
swing at EARP-
EARN
Distortion
≤
2% and 120
Ω
input
level = MAX, amp gain = -11dB
0.98
V
pp
Distortion
≤
2% and 33
Ω
, input
level = MAX, amp gain = -11dB
0.38
Distortion
≤
2% and 120
Ω
, input
level = MAX, amp gain = 1dB
3.1
3.92
Distortion
≤
2% and 33
Ω
, input
level MAX, amp gain = 1dB
1.2
1.5
Earphone
amplifier gain
EARG = 1
1
dB
EARG - 0
-11
dB
Earphone
amplifier state in
power drain
High Z
Earphone
amplifier power
supply rejection
1 kHz, 100mvpp
50
dB
6.9.4
Headset Microphone Input (Pin 42)
Parameter
Conditions
MIN TYP MAX UNIT
Maximum Input Range –
Mic(+) to Mic(-)
Inputs 3 dBm0 (Max. digital
sample amplitude when PGA
gain set to 0 dB)
32.5
m
Vrms
Nominal Ref. Level –
Mic(+) to Mic(-)
-10 dBm0
Differential Input Resistance –
Mic(+) to Mic(-)
100 k
Microphone Pre-Amplifier Gain
25.6 dB
Bias Voltage on Mic(+)
2.0 or 2.5 V
2.0 2.5 Vdc
Mic Bias Current Capability
0 0.5 mA