XE1202A Просмотр технического описания (PDF) - Semtech Corporation
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XE1202A Datasheet PDF : 32 Pages
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XE1202A TrueRF™
Symbol Description
Conditions
Min Typ
Max
IIP3
Input intercept point (from f1 = fLO + 1 MHz,
LNA input to base-band filter f2 = fLO + 1.995 MHz
output)
A-mode
B-mode
-36
-33
-
-21
-18
-
BW
Base band filter bandwidth Programmable
-
10
-
-
20
-
-
40
-
-
200
-
ACR
Adjacent channel rejection funw = fLO + 65 kHz
45 48
-
869 / 915 MHz
Pw=-107 dBm, A-mode
Adjacent channel rejection funw = fLO + 65 kHz
42 45
-
434 MHz
Pw=-102 dBm, A-mode
BR
Bit rate
Programmable
-
4.8
-
-
9.6
-
-
19.2 -
-
38.4 -
-
76.8
-
RFOP RF output power
Programmable
RFOP1
-3 0
-
RFOP2
+2 +5
-
RFOP3
+7 +10
-
RFOP4
+12 +15
-
FR
Synthesizer frequency range Programmable
433 -
435
Each range with its own 868 -
870
external components
902 -
928
TS_BBR Receiver baseband wake-up Crystal oscillator enabled -
time (first step)
200
250
TS_TR Transmitter wake-up time
Frequency synthesizer -
100
150
enabled
TS_FS Frequency synthesizer wake- Crystal oscillator enabled -
200
250
up time
TS_BB2 Receiver RF Front-End Frequency synthesizer -
500
600
wake-up time
enabled
RTParam_WBB=0
TS_FSW Frequency
synthesizer Between 2 channels at 1
switching time
MHz channel spacing
100
150
TS_RS RSSI wake-up time (receiver RSSI enabled during -
-
1.0
operation in mode 100)
mode 010 0.5 ms before
switching to mode 100
(see figure 8)
RSSI enabled during -
-
1.5
mode 100
TS_RSM RSSI measurement time
-
0.5
-
TS_OS
Crystal oscillator wake-up
time
-
0.3
0.5
Unit
dBm
dBm
kHz
kHz
kHz
kHz
dBc
dBc
kbits/
s
kbits/
s
kbits/
s
kbits/
s
kbits/
s
dBm
dBm
dBm
dBm
MHz
MHz
MHz
µs
µs
µs
µs
µs
ms
ms
ms
ms
© Semtech 2006
7
www.semtech.com
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