TCM4400E Datasheet, PDF (14/64 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
global characteristics of voice uplink path
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
Maximum input range (MICP – MICN)
Inputs 3 dBm0 (maximum digital sample amplitude)
with PGA gain, set to 0dB (default value)
32.5
mVrms
Nominal reference level (MICP – MICN)
–10
dBm0
Differential input resistance (MICP – MICN)
90 140 200 kΩ
Micro-amplifier gain
27
dB
Maximum input range at AUXI
Inputs 3 dBm0 (maximum digital sample amplitude)
with PGA gain, set to 0dB (default value)
365
mVrms
Nominal reference level at AUXI
–10
dBm0
Input resistance at AUXI
140 220 300 kΩ
Auxi amplifier gain
6
dB
PGA absolute gain
4.6
dB
VULPGA code =10000
–12 dB –12.7 –12.2 –11.7
VULPGA code = 10111
–11 dB –11.3 –10.8 –10.3
VULPGA code = 11000
–10 dB –10.6 –10.1 –9.6
VULPGA code = 11001
–9 dB
–9.5
–9 –8.5
VULPGA code = 11010
–8 dB
–8.5
–8 –7.5
VULPGA code = 11011
–7 dB
–7.5
–7 –6.5
VULPGA code = 00000 (default)
–6 dB
–6.7 –6.2 –5.7
VULPGA code = 00001
–5 dB
–5.6 –5.1 –4.6
VULPGA code = 00010
–4 dB
–4.6 –4.1 –3.6
VULPGA code = 00011
–3 dB
–3.5
–3 –2.5
VULPGA code = 00100
–2 dB
–2.4 –1.9 –1.4
VULPGA code = 00101
–1 dB
–1.5
–1 –0.5
PGA gain step
VULPGA code = 00110 (ref)
0 dB
0
dB
VULPGA code = 00111
1 dB
0.7 1.2 1.7
VULPGA code = 01000
2 dB
1.4 1.9 2.4
VULPGA code = 01001
3 dB
2.6 3.1 3.6
VULPGA code = 01010
4 dB
3.6 4.1 4.6
VULPGA code = 01011
5 dB
4.5
5 5.5
VULPGA code = 01100
6 dB
5.3 5.8 6.3
VULPGA code = 10001
7 dB
6.4 6.9 7.4
VULPGA code = 10010
8 dB
7.4 7.9 8.4
VULPGA code = 10011
9 dB
8.6 9.1 9.6
VULPGA code = 10100
10 dB
9.6 10.1 10.6
VULPGA code = 10101
11 dB
10.5
11 11.5
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ^{Power supply rejection, 0 Hz –100 kHz band}
VULPGA code = 10110
12 dB
11.5
12 12.5
70
dB
14
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