TWL1103_01 Datasheet, PDF (9/30 Pages) Texas Instruments – VOICE-BAND AUDIO PROCESSOR (VBAP)

TWL1103
VOICE-BAND AUDIO PROCESSOR (VBAP)
SLWS108A – JULY 2000 – JANUARY 2001
electrical characteristics, V_DD = 2.7 V, T_A = 25° C (unless otherwise noted) (continued)
transmit filter transfer, companded mode (µ-law or A-law) or linear mode selected, transmit slope filter
selected (MCLK = 2.048 MHz) (see Note 9)
PARAMETER
TEST CONDITIONS
fMIC1 or f _MIC2 =100 Hz
fMIC1 or fMIC2 = 200 Hz
fMIC1 or fMIC2 = 250 Hz
fMIC1 or fMIC2 = 300 Hz
fMIC1 or fMIC2 = 400 Hz
fMIC1 or fMIC2 = 500 Hz
fMIC1 or fMIC2 = 600 Hz
fMIC1 or fMIC2 = 700 Hz
fMIC1 or fMIC2 = 800 Hz
fMIC1 or fMIC2 = 900 Hz
Gain relative to input signal gain at 1000 Hz, with slope filter selected
fMIC1 or fMIC2 = 1000 Hz
fMIC1 or fMIC2 = 1500 Hz
fMIC1 or fMIC2 = 2000 Hz
fMIC1 or fMIC2 = 2500 Hz
fMIC1 or fMIC2 = 3000 Hz
fMIC1 or fMIC2 = 3100 Hz
fMIC1 or fMIC2 = 3300 Hz
fMIC1 or fMIC2 = 3500 Hz
fMIC1 or fMIC2 = 4000 Hz
fMIC1 or fMIC2 = 4500 Hz
fMIC1 or fMIC2 = 5000 Hz
fMIC1 or fMIC2 = 8000 Hz
NOTE 9: The pass-band tolerance is ± 0.25 dB from 300 Hz to 3500 Hz.
MIN TYP MAX UNIT
–27 dB
–8 dB
–4 dB
– 1.80
dB
– 1.50
dB
– 1.30
dB
– 1.1
dB
– 0.8
dB
– 0.57
dB
– 0.25
dB
0
dB
1.8
dB
4.0
dB
6.5
dB
7.6
dB
7.7
dB
8.0
dB
6.48
dB
– 13 dB
– 35 dB
– 45 dB
– 50 dB
transmit idle channel noise and distortion, companded mode (µ-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
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,
composite power level, – 13 dBm0
CCITT G.712 (7.1), R2
CCITT G.712 (7.2), R2
49
dB
51
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