TCM320AC36 Datasheet, PDF (9/23 Pages) Texas Instruments – VOICE-BAND AUDIO PROCESSORS VBAPE

TCM320AC36, TCM320AC37
VOICE-BAND AUDIO PROCESSORS (VBAP™)
SLWS003C – MAY 1992 – REVISED APRIL – 1998
receive idle channel noise and distortion, companded mode with µ-law or A-law selected, over recommended
ranges of supply voltage and operating free-air temperature (see Note 9)
PARAMETER
TEST CONDITIONS
MIN MAX UNIT
Receive noise, psophometrically weighted
DIN = 11010101 (A-law)
– 75 dB0p
Receive noise, C-message weighted
DIN = 11111111 (µ-law)
5 dBrnc0
DIN to EARA and EARB at 0 dBm0 to – 18 dBm0
36
DIN to EARA and EARB at – 19 dBm0 to – 24 dBm0
34
Receive signal-to-distortion ratio with sine-wave input DIN to EARA and EARB at – 25 dBm0 to – 30 dBm0
30
dB
DIN to EARA and EARB at – 31 dBm0 to – 38 dBm0
23
DIN to EARA and EARB at – 39 dBm0 to – 45 dBm0
17
NOTE 9. Receive output is measured differentially in the maximum gain configuration. To set the output amplifier for maximum gain, EARGS is
connected to EARB and the output is taken between EARA and EARB. All output levels are (sin x)/x corrected.
receive idle channel noise and distortion, linear mode selected, over recommended ranges of supply voltage
and operating free-air temperature (see Notes 9 and 12)
PARAMETER
TEST CONDITIONS
MIN MAX UNIT
Receive noise, C-message weighted
DIN = 00000000
200 µVrms
DIN to EARA and EARB at 0 dBm0 to – 6 dBm0
50
DIN to EARA and EARB at – 7 dBm0 to – 12 dBm0
48
DIN to EARA and EARB at – 13 dBm0 to – 18 dBm0
38
Receive signal-to-distortion ratio with sine-wave input
dB
DIN to EARA and EARB at – 19 dBm0 to – 24 dBm0
32
DIN to EARA and EARB at – 25 dBm0 to – 40 dBm0
18
DIN to EARA and EARB at – 41 dBm0 to – 45 dBm0
15
Intermodulation, 2-tone CCITT distortion method,
composite power level – 13 dBm0
CCITT G.712 (7.1), R2
CCITT G.712 (7.2), R3
50
dB
54
NOTES: 9. Receive output is measured differentially in the maximum gain configuration. To set the output amplifier for maximum gain, EARGS
is connected to EARB and the output is taken between EARA and EARB. All output levels are (sin x)/x corrected.
12. Receive noise, linear mode: 200 µVrms is equivalent to –71 dB (referenced to device 0-dB level).
power supply rejection and crosstalk attenuation over recommended ranges of supply voltage and
operating free-air temperature
PARAMETER
TEST CONDITIONS
MIN TYP† MAX UNIT
Supply voltage rejection, transmit channel
Idle channel, supply signal = 100 mVrms,
f = 0 to 30 kHz (measured at DOUT)
– 30
dB
Supply voltage rejection, receive channel
Idle channel, supply signal = 100 mVrms,
EARGS connected to EARB,
f = 0 to 30 kHz (measured differentially between EARA
and EARB)
– 30
dB
Crosstalk attenuation, transmit-to-receive
(differential)
MICIN = 0 dB, f = 1.02 kHz, unity transmit gain,
EARGS connected to EARB,
measured differentially between EARA and EARB
68
dB
Crosstalk attenuation, receive-to-transmit
DIN = 0 dBm0, f = 1.02 kHz, unity transmit
gain, measured at DOUT
68
dB
† _{All typical values are at VCC = 5 V, TA = 25°C.}
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