TWL1106

VOICEBAND AUDIO PROCESSOR (VBAP)

SLWS094 – JUNE 2001

8

POST OFFICE BOX 655303

electrical characteristics over recommended ranges of supply voltage and operating free-air temperature

(unless otherwise noted) (continued)

receive filter transfer, companded mode (

µ-law) or linear mode selected (MCLK = 2.048 MHz) (see Note 10)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

fEAROUT < 100 Hz

–15

fEAROUT = 200 Hz

–5

fEAROUT = 300 Hz to 3 kHz

–0.5

0.5

Gain relative to input signal gain at 1.02-kHz

fEAROUT = 3.4 kHz

–1.5

0

dB

Gain relative to in ut signal gain at 1.02 kHz

fEAROUT = 4 kHz

–14

dB

fEAROUT = 4.6 kHz

–35

fEAROUT = 8 kHz

–47

NOTE 10: Volume control = –3 dB, PCMI data input to –1 dB level (32-

Ω load)

receive idle channel noise and distortion, companded mode (

µ-law) selected (see Note 10)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Receive noise, C-message weighted

PCMI = 11111111 (

µ-law)

–90

–88

dBm0

PCMI to EAROUT–, EAROUT+ at 3 dBm0

21

PCMI to EAROUT–, EAROUT+ at 0 dBm0

25

PCMI to EAROUT–, EAROUT+ at –5 dBm0

36

Receive signal-to-distortion ratio with 1.02-kHz

PCMI to EAROUT–, EAROUT+ at –10 dBm0

43

dB

Receive signal to distortion ratio with 1.02 kHz

sine-wave input

PCMI to EAROUT–, EAROUT+ at –20 dBm0

40

dB

PCMI to EAROUT–, EAROUT+ at –30 dBm0

38

PCMI to EAROUT–, EAROUT+ at –40 dBm0

28

PCMI to EAROUT–, EAROUT+ at –45 dBm0

23

NOTE 10: Volume control = –3 dB, PCMI data input to –1 dB level (32-

Ω load)

receive idle channel noise and distortion, linear mode selected (see Note 10)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Receive noise, (20-Hz to 20-kHz brickwall window)

PCMI = 0000000000000

–83

–78

dBm0

PCMI to EAROUT–, EAROUT+ at 3 dBm0

48

52

PCMI to EAROUT–, EAROUT+ at 0 dBm0

51

56

PCMI to EAROUT–, EAROUT+ at –5 dBm0

57

59

Receive signal-to-distortion ratio with 1.02-kHz

PCMI to EAROUT–, EAROUT+ at –10 dBm0

55

62

dB

Receive signal to distortion ratio with 1.02 kHz

sine-wave input (0–4 kHz)

PCMI to EAROUT–, EAROUT+ at –20 dBm0

51

53

dB

PCMI to EAROUT–, EAROUT+ at –30 dBm0

45

47

PCMI to EAROUT–, EAROUT+ at –40 dBm0

42

47

PCMI to EAROUT–, EAROUT+ at –45 dBm0

35

45

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: Volume control = –3 dB, PCMI data input to –1 dB level (32-

Ω load)