
TWL1102
VOICE-BAND AUDIO PROCESSOR (VBAP
)
SLVS264 – NOVEMBER 1999
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics at 2.7 V and 25
° C (unless otherwise noted) (continued)
transmit filter transfer, companded mode (
-law or A-law) or linear mode selected, transmit slope filter
selected (MCLK = 2.048 MHz) (see Note 11)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
fMIC1 or f MIC2 =100 Hz
–27
dB
fMIC1 or fMIC2 = 200 Hz
–8
dB
fMIC1 or fMIC2 = 250 Hz
–4
dB
fMIC1 or fMIC2 = 300 Hz
–1.80
dB
fMIC1 or fMIC2 = 400 Hz
–1.50
dB
fMIC1 or fMIC2 = 500 Hz
–1.30
dB
fMIC1 or fMIC2 = 600 Hz
–1.1
dB
fMIC1 or fMIC2 = 700 Hz
– 0.8
dB
fMIC1 or fMIC2 = 800 Hz
– 0.57
dB
fMIC1 or fMIC2 = 900 Hz
– 0.25
dB
Gain relative to input signal gain at 1000 Hz with slope filter selected
fMIC1 or fMIC2 = 1000 Hz
0
dB
Gain relative to input signal gain at 1000 Hz, with slope filter selected
fMIC1 or fMIC2 = 1500 Hz
1.8
dB
fMIC1 or fMIC2 = 2000 Hz
4.0
dB
fMIC1 or fMIC2 = 2500 Hz
6.5
dB
fMIC1 or fMIC2 = 3000 Hz
7.6
dB
fMIC1 or fMIC2 = 3100 Hz
7.7
dB
fMIC1 or fMIC2 = 3300 Hz
8.0
dB
fMIC1 or fMIC2 = 3500 Hz
6.48
dB
fMIC1 or fMIC2 = 4000 Hz
–13
dB
fMIC1 or fMIC2 = 4500 Hz
–35
dB
fMIC1 or fMIC2 = 5000 Hz
–45
dB
fMIC1 or fMIC2 = 8000 Hz
–50
dB
NOTE 11: The pass-band tolerance is
± 0.25 dB from 300 Hz to 3500 Hz.
transmit idle channel noise and distortion, companded mode (
-law or A-law) selected, slope filter bypassed
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Transmit idle channel noise, psophometrically
weighted
TXPGA gain= 0 dB, micamp 1 gain = 23.5 dB,
micamp 2 gain = 0 dB
–86.6
–78
dBm0p
MIC1N, MIC1P to PCMO at 3 dBm0
27
MIC1N, MIC1P to PCMO at 0 dBm0
30
MIC1N, MIC1P to PCMO at –5 dBm0
33
Transmit signal-to-distortion ratio with
MIC1N, MIC1P to PCMO at –10 dBm0
36
dB
Transmit signal to distortion ratio with
1020-Hz sine-wave input
MIC1N, MIC1P to PCMO at –20 dBm0
35
dB
MIC1N, MIC1P to PCMO at – 30 dBm0
26
MIC1N, MIC1P to PCMO at – 40 dBm0
24
MIC1N, MIC1P to PCMO at – 45 dBm0
19
Intermodulation distortion, 2-tone CCITT method,
CCITT G.712 (7.1), R2
49
dB
Intermodulation distortion, 2 tone CCITT method,
composite power level, –13 dBm0
CCITT G.712 (7.2), R2
51
dB