TCM4400E Datasheet, PDF (15/64 Pages) Texas Instruments – GSM/DCS BASEBAND AND VOICE A/D AND D/A RF INTERFACE CIRCUIT

TCM4400E
GSM/DCS BASEBAND AND VOICE A/D
AND D/A RF INTERFACE CIRCUIT
SLWS082A – JULY 1999 – REVISED MARCH 2000
voice uplink path (continued)
frequency response of the voiceband uplink path
PARAMETER
100 Hz
150 Hz
200 Hz
300 Hz
1000 Hz
Frequency response (Gain relative to reference gain at
1 kHz)
2000 Hz
3000 Hz
3400 Hz
3600 Hz
3800 Hz
4000 Hz
> 4600 Hz
TEST CONDITIONS
Reference point is 1000 Hz
MIN
–2
–1.5
–1.5
–2
TYP
–37.4
–25.9
–16.5
–1.46
0
–0.58
–0.77
–1
–12.4
–23.3
–35
> – 52
MAX
–20
–15
–10
1
1
1
1
–6
–18
–30
–40
UNIT
dB
psophometric SNR vs signal level of the voiceband uplink path
PARAMETER
TEST CONDITIONS
3 dBm0
0 dBm0
–5 dBm0
Signal to noise + distortion
–10 dBm0
–20 dBm0
–30 dBm0
–40 dBm0
–45 dBm0
Maximum idle channel noise
0 Hz –4 kHz
Crosstalk with the downlink path
Downlink path loaded with 150 Ω
MIN TYP MAX UNIT
35
40
42
45
dB
42
40
30
25
–72 dBm0
–66 dB
gain characteristics of the voiceband uplink path
PARAMETER
Absolute gain error
Gain tracking error. Over the range 3 dBm0 to – 45 dBm0 at
1 kHz with reference –10 dBm0
3 dBm0
0 dBm0
–5 dBm0
–10 dBm0
–20 dBm0
–30 dBm0
–40 dBm0
–45 dBm0
TEST CONDITIONS
at 0dBm0 and 1KHz
at –10dBm0 and 1KHz
Reference level
MIN
–1
–11
–0.25
–0.25
–0.25
–0.25
–0.25
–0.35
–0.50
TYP MAX UNIT
1
dB
–10
–9
0.25
0.25
0.25
0
dB
0.25
0.25
0.35
0.50
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