參數(shù)資料
型號: TCM4400EGGM
廠商: Texas Instruments, Inc.
英文描述: GSM/DCS BASEBAND AND VOICE A/D AND D/A RF INTERFACE CIRCUIT
中文描述: 的GSM / DCS的基帶和語音的A / D和D / A射頻接口電路
文件頁數(shù): 17/64頁
文件大小: 888K
代理商: TCM4400EGGM
TCM4400E
GSM/DCS BASEBAND AND VOICE A/D
AND D/A RF INTERFACE CIRCUIT
SLWS082A – JULY 1999 – REVISED MARCH 2000
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
voice downlink path (continued)
frequency response of the voiceband downlink path
PARAMETER
TEST CONDITIONS
MIN
TYP
–5.8
MAX
UNIT
100 Hz
–5
150 Hz
–3.6
–2
200 Hz
–2.5
1
300 Hz
–3
–1.4
1
1000 Hz
Reference point
0
Frequency response (Gain relative to
reference gain at 1 kHz)
2000 Hz
–1
–0.6
1
dB
3000 Hz
–1
–0.15
1
3400 Hz
–3
–0.35
1
3600 Hz
–9.0
–6
3800 Hz
–21.0
–15
4000 Hz
>4600 Hz
–32.0
–60.0
–28
psophometric SNR vs signal level of the voiceband downlink path
PARAMETER
TEST CONDITIONS
MIN
25
TYP
MAX
UNIT
–45 dBm0
–40 dBm0
30
–30 dBm0
40
Signal level
–20 dBm0
42
dB
–10 dBm0
45
–5 dBm0
42
0 dBm0
40
3 dBm0
35
Idle channel noise, 0 Hz –4 kHz
–71
dBm
Crosstalk with the uplink path
–50
dB
gain characteristics of the voiceband downlink path
PARAMETER
TEST CONDITIONS
at 0 dbm0 and 1 kHz
MIN
–1.8
TYP
MAX
0.2
UNIT
Absolute gain error
0
dB
at –10 dbm0 and 1 kHz
–11.8
–10
–9.8
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
1 kHz with reference –10 dBm0 PGA gain = 0dB Volume
1 kHz with reference –10 dBm0 PGA gain = 0dB. Volume
control = –12 dB
control 12 dB
–10 dBm0
Reference level
0
dB
–20 dBm0
–0.25
0.25
–30 dBm0
–0.25
0.25
–40 dBm0
–45 dBm0
–0.35
–0.50
0.35
0.50
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