TCM320AC56, TCM320AC57

VOICE-BAND AUDIO PROCESSORS (VBAP

)

SLWS016A – JUNE 1996 – REVISED APRIL 1997

9

POST OFFICE BOX 655303

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

dBm0p

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

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

Receive signal to distortion ratio with sine wave input

DIN to EARA and EARB at – 13 dBm0 to – 18 dBm0

38

dB

Receive signal-to-distortion ratio with sine-wave input

DIN to EARA and EARB at – 19 dBm0 to – 24 dBm0

32

dB

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,

CCITT G.712 (7.1), R2

50

dB

,,

composite power level – 13 dBm0

CCITT G.712 (7.2), R3

54

dB

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.