TCM8000

CELLULAR TELEPHONE AUDIO PROCESSOR

SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993

POST OFFICE BOX 655303

10

total harmonic distortion at TXO vs TXLIM, M1/M2 = 100 mVrms at 1 kHz, MICTRIM = <1000>,

TXTRIM = <1000>, compressor enabled

PARAMETER

TEST CONDITIONS

MIN

MAX

UNIT

TXLIM = 500 mV

10%

Total harmonic distortion

TXLIM = 550 mV

4%

Total harmonic distortion

TXLIM = 600 mV

1%

TXLIM = 800 mV

1%

PARAMETER

MIN

MAX

UNIT

Psophometrically-weighted rms noise

4

mV

transmit path switch attenuation (see Table 1)

PARAMETER

TEST CONDITIONS

MIN

MAX

UNIT

MICSW, HSS = 0/1

50

TDSW, TTS = 0/1

50

Attenuation

TXVOICE, TVM = 1

50

dB

Attenuation

TXSUM, TSM = 1

50

TXDATA, TDM = 1

50

TDI to TXO gain, TDI = 100 mVrms at 1 kHz, TXTRIM = <1000> (see Table 1)

PARAMETER

MIN

MAX

UNIT

Gain

11

13

dB

transmit data frequency response, NMT mode, TXDA = 275 mVrms, TXTRIM = <1000>(see Figure 7 and

Table 1)

PARAMETER

TEST CONDITIONS

MIN

MAX

UNIT

Gain

f = 1.5 kHz

2

4

dB

f = 100 Hz

–22

f = 700 Hz

– 7.6

– 5.6

Relative gain

f = 2.1 kHz

1.9

2.9

dB

Relative gain

f = 2.3 kHz

4.7

dB

f = 3.5 kHz

4.7

f = 100 kHz

–25

transmit data frequency response, AMPS/TACS mode, TXDA = 400 mVrms, TXTRIM = <1000>(see Figure 8

and Table 1)

PARAMETER

TEST CONDITIONS

MIN

MAX

UNIT

Gain

f = 1 kHz

±1

dB

f = 8 kHz

±1

Relative gain

f = 16 kHz

–6

1

dB

Relative gain

f = 30 kHz

–18

dB

f = 100 kHz

–18

digital-to-analog converter, measured at DAC (see Table 1 for codes)

PARAMETER

MIN

MAX

UNIT

Output code <0000>

50

mV

Output code <1111>, relative VBRX

– 100

0

mV

DNL, typical step size = 160 mV

0.5

LSB