CC2500RGPR Datasheet, PDF (9/99 Pages) Texas Instruments – Low-Cost Low-Power 2.4 GHz RF Transceiver

CC2500
4.2
RF Receive Section
Tc = 25C, VDD = 3.0 V if nothing else stated. All measurement results obtained using the CC2500EM reference design
([4]).
Parameter
Min Typ
Max
Unit Condition/Note
Digital channel filter 58
bandwidth
812
kHz User programmable. The bandwidth limits are
proportional to crystal frequency (given values assume
a 26.0 MHz crystal).
2.4 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(2-FSK, 1% packet error rate, 20 bytes packet length, 203 kHz digital channel filter bandwidth)
Receiver sensitivity
–104
dBm
The RX current consumption can be reduced by
approximately 1.7 mA by setting
MDMCFG2.DEM_DCFILT_OFF=1. The typical sensitivity
is then -102 dBm and the temperature range is from 0^oC
to +85^oC.
The sensitivity can be improved to typically –106 dBm
with MDMCFG2.DEM_DCFILT_OFF=0 by programming
registers TEST2 and TEST1 (see page 82). The
temperature range is then from 0^oC to +85^oC.
Saturation
–13
dBm
Adjacent channel
23
rejection
dB Desired channel 3 dB above the sensitivity limit. 250
kHz channel spacing
Alternate channel
31
rejection
dB Desired channel 3 dB above the sensitivity limit. 250
kHz channel spacing
See Figure 22 for plot of selectivity versus frequency
offset
Blocking
Wanted signal 3 dB above sensitivity level.
±10 MHz offset
64
±20 MHz offset
70
dBm Compliant with ETSI EN 300 440 class 2 receiver
dBm ^{requirements.}
±50 MHz offset
71
dBm
10 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(2-FSK, 1% packet error rate, 20 bytes packet length, 232 kHz digital channel filter bandwidth)
Receiver sensitivity
–99
dBm
The RX current consumption can be reduced by
approximately 1.7 mA by setting
MDMCFG2.DEM_DCFILT_OFF=1. The typical sensitivity
is then -97 dBm
Saturation
–9
Adjacent channel
18
rejection
Alternate channel
25
rejection
Blocking
±10 MHz offset
59
±20 MHz offset
65
±50 MHz offset
66
dBm
dB
dB
dB
dB
dB
The sensitivity can be improved to typically –101 dBm
with MDMCFG2.DEM_DCFILT_OFF=0 by programming
registers TEST2 and TEST1 (see page 82). The
temperature range is then from 0^oC to +85^oC.
Desired channel 3 dB above the sensitivity limit. 250
kHz channel spacing
Desired channel 3 dB above the sensitivity limit. 250
kHz channel spacing
See Figure 23 for plot of selectivity versus frequency
offset
Wanted signal 3 dB above sensitivity level.
Compliant with ETSI EN 300 440 class 2 receiver
requirements.
SWRS040C
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