TCM4400EPET datasheet(15/64 Pages) TI

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TCM4400E

GSM/DCS BASEBAND AND VOICE A/D

AND D/A RF INTERFACE CIRCUIT

SLWS082A – JULY 1999 – REVISED MARCH 2000

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

voice uplink path (continued)

frequency response of the voiceband uplink path

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

100 Hz

–37.4

–20

150 Hz

–25.9

–15

200 Hz

–16.5

–10

300 Hz

–2

–1.46

1000 Hz

Reference point is 1000 Hz

Frequency response (Gain relative to reference gain at

2000 Hz

–1.5

–0.58

(

1 kHz)

3000 Hz

–1.5

–0.77

3400 Hz

–2

–1

3600 Hz

–12.4

–6

3800 Hz

–23.3

–18

4000 Hz

–35

–30

> 4600 Hz

>–52

–40

psophometric SNR vs signal level of the voiceband uplink path

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

3 dBm0

0 dBm0

–5 dBm0

Signal to noise + distortion

–10 dBm0

Signal to noise + distortion

–20 dBm0

–30 dBm0

–40 dBm0

–45 dBm0

Maximum idle channel noise

0 Hz –4 kHz

–72

dBm0

Crosstalk with the downlink path

Downlink path loaded with 150

Ω

–66

gain characteristics of the voiceband uplink path

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Absolute gain error

at 0dBm0 and 1KHz

–1

Absolute gain error

at –10dBm0 and 1KHz

–11

–10

–9

3 dBm0

–0.25

0.25

0 dBm0

–0.25

0.25

–5 dBm0

–0.25

0.25

Gain tracking error. Over the range 3 dBm0 to – 45 dBm0 at

–10 dBm0

Reference level

1 kHz with reference –10 dBm0

–20 dBm0

–0.25

0.25

–30 dBm0

–0.25

0.25

–40 dBm0

–0.35

0.35

–45 dBm0

–0.50

0.50

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