xe1205 Semtech Corporation, xe1205 Datasheet - Page 23
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xe1205
Manufacturer Part Number
xe1205
Description
Low-power, High Link Budget Integrated Uhf Transceiver
Manufacturer
Semtech Corporation
Datasheet
1.XE1205.pdf
(48 pages)
- Current page: 23 of 48
- Download datasheet (764Kb)
When operating at 304.7 kbit/s, the loop filter must be modified. Typical recommended component values are provided
below :
Like for any other configuration, in order to avoid crystal misalignment issues and get the best performance it is
recommended to perform an AFC with maximum Rx filter bandwidth before using the 304.7 kbit/s with the settings
described above.
AFC operation may need to be performed at a lower datarate to cover worst case crystal, process and temperature
variations.
Please note that all features including FIFO are available at bit rates up to 304.7 kbit/s.
© Semtech 2007
6.2
6.3
6.4
·
·
Sensitivity@0.1%: -102 dBm in mode A and -90 dBm in mode B.
ACR@1MHz offset, single tone: 25 dBc.
HARDWARE SETTINGS
OPERATION
TYPICAL PERFORMANCE
Name
CL2
CL1
RL1
434 MHz
Table 15: PLL Loop Filter Bill of Material for 304.7 kbit/s
220 pF
3.3 nF
1.5 kW
869 MHz
150 pF
1.5 kW
10 nF
23
915 MHz
150 pF
1.5 kW
10 nF
Tolerance
± 5%
± 5%
± 5%
XE1205
www.semtech.com
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