EES3 Hardware Interface Description
5.7 Electrical Characteristics of the Voiceband Part
99
EES3_HD_v01.100b
Page 95 of 118
2009-08-12
Confidential / Released
5.7.4
Voiceband Receive Path
Test conditions:
•
The values specified below were tested to 1kHz with default audio mode settings, unless
otherwise stated.
•
Default audio mode settings are: mode=5 for EPP1 to EPN1 and mode=6 for EPP2 to
EPN2, outBbcGain=1 (Mode 5) or outBbcGain=0 (Mode 6), OutCalibrate=16384 (vol-
ume=4) or OutCalibrate=11585 (volume=3), sideTone=0.
Table 33:
Voiceband receive path
Parameter
Min
Typ
Max
Unit
Test condition / remark
Maximum differential
output voltage (peak to
peak)
1
EPP1 to EPN1
6.0
6.2
V
V
8
,
no load,
Volume 4
@ 3.14 dBm0 (Full Scale)
Batt+ = 3.6V
Maximum differential
output voltage (peak to
peak)
EPP2 to EPN2
4.0
4.2
V
V
32
,
no load
Volume 3
2
@ 3.14 dBm0 (Full Scale)
Nominal differential out-
put voltage (peak to
peak)
EPP1 to EPN1
4.2
4.3
V
V
8
,
no load,
Volume 4
@ 0 dBm0 (Nominal level)
Nominal differential out-
put voltage (peak to
peak)
EPP2 to EPN2
2.8
2.9
V
V
32
,
no load
Volume 3
@ 0 dBm0 (Nominal level)
Output bias voltage
Batt+/2
V
from EPP1 or EPN1 to AGND
Output bias voltage
1.2
V
from EPP2 or EPN2 to AGND
Differential output gain
settings (gs) at 6dB
stages (outBbcGain)
-18
0
dB
Set with AT^SNFO
Fine scaling by DSP
(outCalibrate)
-
0
dB
Set with AT^SNFO
Differential output load
resistance
7.5
8
From EPP1 to EPN1
Differential output load
resistance
27
32
From EPP2 to EPN2
Single ended output
load resistance
27
32
From EPP2 or EPN2 to AGND
Absolute gain error
-0.1
0.1
dB
outBbcGain=2
Idle channel noise
3
-83
-75
dBm0p outBbcGain=2
Signal to noise and
distortion
4
47
dB
outBbcGain=2
