CC2500_06 Datasheet, PDF (44/84 Pages) Texas Instruments – Single Chip Low Cost Low Power RF Transceiver

CC2500
40
35
30
25
20
15
10
5
0
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
-5
-10
Fre quency offset [M Hz]
Figure 23: Typical selectivity at 10 kbps. IF frequency is 273.9 kHz.
MDMCFG2.DEM_DCFILT_OFF = 1
50
40
30
20
10
0
-3
-2
-1
0
1
2
3
-10
-20
Frequency offset [MHz]
Figure 24: Typical selectivity at 250 kbps. IF frequency is 177.7 kHz.
MDMCFG2.DEM_DCFILT_OFF = 0
50
40
30
20
10
0
-3
-2
-1
0
1
2
3
-10
-20
Frequency offset [MHz]
Figure 25: Typical selectivity at 250 kbps. IF frequency is 457 kHz.
MDMCFG2.DEM_DCFILT_OFF = 1
PRELIMINARY Data Sheet (Rev.1.2) SWRS040A
Page 44 of 83