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TCM4400EPET Datasheet(PDF) 11 Page - Texas Instruments

Part # TCM4400EPET
Description  GSM/DCS BASEBAND AND VOICE A/D AND D/A RF INTERFACE CIRCUIT
PDF  64 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TCM4400EPET Datasheet(HTML) 11 Page - Texas Instruments

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TCM4400E
GSM/DCS BASEBAND AND VOICE A/D
AND D/A RF INTERFACE CIRCUIT
SLWS082A – JULY 1999 – REVISED MARCH 2000
11
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
channel characteristics (continued)
SNR vs signal level–baseband downlink path
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
–50 dBm0
200 kHz bandwidth
21
–40 dBm0
26
–30 dBm0
36
Signal level
–20 dBm0
46
dB
–10 dBm0
50
–5 dBm0
55
0 dBm0
30
Idle channel noise, 0 Hz –200 kHz
–66
dBm0
gain characteristics of the baseband downlink path
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Absolute gain error relative to VVREF
at –10 dBm0 and 18 kHz
–11
–10
–9
dB
0 dBm0
–0.25
0.25
–5 dBm0
–0.25
0.25
Gain tracking error Over the range 3 dBm0 to
50 dBm0 at
–10 dBm0
Reference level
0
dB
Gain tracking error. Over the range 3 dBm0 to – 50 dBm0 at
18 kHz with reference –10 dBm0
–20 dBm0
–0.25
0.25
dB
18 kHz with reference 10 dBm0
–30 dBm0
–0.25
0.25
–40 dBm0
–0.25
0.25
–50 dBm0
–0.50
0.50
dB
group delay – baseband downlink path
PARAMETER
MIN
TYP
MAX
UNIT
Group delay
0 Hz to 100 kHz
28
µs
I and Q channels matching – baseband downlink path
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Gain matching between channels
0 Hz to 96 kHz
18 kHz sinewave
–0.5
0.5
dB
Delay matching between channels
0 Hz to 96 kHz
18 kHz sinewave
–8
8
ns
baseband downlink path global characteristics
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Power supply rejection, 0 Hz –100 kHz band
70
dB
timing requirements of baseband downlink path (see Figure 2)
MIN
NOM
MAX
UNIT†
tsu4
Setup time, BDLON
↑ to BCAL↑
5
µs
tw3
Pulse duration, BCAL
60
µs
tsu5
Setup time BCAL low before BENA
↑
0
µs
tw4
Pulse duration, BENA high
N effective duration of burst controlled by BENA
N
1/4-bit
tsu6
Setup time, BENA
↑ before DATAOUT VALID
24.3
28
µs
th4
Hold time, DATAOUT VALID after BENA
↓
3.7
µs
th5
Hold time, BDLON low after BENA low
0
µs
† Values in the above table are given for system information only.



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