TWL1110
VOICE-BAND AUDIO PROCESSOR (VBAP
)
SLWS103 – NOVEMBER 2000
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and free-air temperature (unless
otherwise noted) (continued)
receive idle channel noise and distortion, EAR1 selected, linear mode selected (see Note 10)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Receive noise, (20-Hz to 20-kHz brickwall window)
PCMIN = 000000000000000
–88
–83
dBm0
PCMIN to EAR1ON, EAR1OP at 3 dBm0
53
61
PCMIN to EAR1ON, EAR1OP at 0 dBm0
63
75
PCMIN to EAR1ON, EAR1OP at – 5 dBm0
60
72
Receive signal-to-distortion ratio with 1020-Hz
PCMIN to EAR1ON, EAR1OP at –10 dBm0
56
67
dB
Receive signal to distortion ratio with 1020 Hz
sine-wave input
PCMIN to EAR1ON, EAR1OP at – 20 dBm0
50
63
dB
PCMIN to EAR1ON, EAR1OP at – 30 dBm0
45
50
PCMIN to EAR1ON, EAR1OP at – 40 dBm0
40
51
PCMIN to EAR1ON, EAR1OP at – 45 dBm0
38
49
Intermodulation distortion, 2-tone CCITT method,
CCITT G.712 (7.1), R2
50
dB
Intermodulation distortion, 2 tone CCITT method,
composite power level, –13 dBm0
CCITT G.712 (7.2), R2
54
dB
NOTE 10: RXPGA = – 4 dB for 32
, RXVOL = 0 dB, 1020-Hz input signal at PCMI, output measured differentially between EAR1ON and EAR1OP.
receive idle channel noise and distortion EAR2 selected, companded mode (
-law or A-law) selected
(see Note 11)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Receive noise, psophometrically weighted
PCMIN = 11010101 (A-law)
–82
–78
dBmop
Receive noise, C-message weighted
PCMIN = 11111111 (
-law)
36
50
Vrms
PCMIN to EAR2O at 3 dBm0
21
PCMIN to EAR2O at 0 dBm0
25
PCMIN to EAR2O at – 5 dBm0
36
Receive signal-to-distortion ratio with 1020-Hz sinewave
PCMIN to EAR2O at –10 dBm0
43
dB
Receive signal-to-distortion ratio with 1020-Hz sinewave
input
PCMIN to EAR2O at – 20 dBm0
40
dB
PCMIN to EAR2O at – 30 dBm0
38
PCMIN to EAR2O at – 40 dBm0
28
PCMIN to EAR2O at – 45 dBm0
23
NOTE 11. RXPGA = – 1 dB, RXVOL = 0 dB
receive idle channel noise and distortion, EAR2 selected, linear mode selected (see Note 11)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Receive noise, (20 Hz to 20 kHz brickwall window)
PCMIN = 000000000000000
–83
–86
dBm0
PCMIN to EAR2O at 3 dBm0
53
60
PCMIN to EAR2O at 0 dBm0
60
65
PCMIN to EAR2O at – 5 dBm0
58
62
Receive signal-to-noise + distortion ratio with 1020-Hz sinewave
input
PCMIN to EAR2O at –10 dBm0
55
60
dB
input
PCMIN to EAR2O at – 20 dBm0
53
60
dB
PCMIN to EAR2O at – 30 dBm0
51
58
PCMIN to EAR2O at – 40 dBm0
50
57
PCMIN to EAR2O at – 45 dBm0
48
52
Intermodulation distortion 2 tone CCITT method
CCITT G.712 (7.1), R2
50
dB
Intermodulation distortion, 2-tone CCITT method
CCITT G.712 (7.2), R2
54
dB
NOTE 11: RXPGA = – 1 dB, RXVOL = 0 dB