CC2500_06 Datasheet, PDF (8/84 Pages) Texas Instruments – Single Chip Low Cost Low Power RF Transceiver

CC2500
Current consumption,
TX states
11.1
mA Transmit mode, –12 dBm output power
15.1
mA Transmit mode, -6 dBm output power
21.2
mA Transmit mode, 0 dBm output power
Table 4: Current consumption
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.
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 kbps data rate, current optimized, MDMCFG2.DEM_DCFILT_OFF = 1
(FSK, 1% packet error rate, 20 bytes packet length, 203 kHz digital channel filter bandwidth)
Receiver sensitivity
–104
dBm
The sensitivity can be improved to typically –106 dBm by
setting MDMCFG2.DEM_DCFILT_OFF = 0 . The typical
current consumption is in this case 17.0 mA at sensitivity
llimit.
Saturation
–13
dBm
Adjacent channel
rejection
23
dB Desired channel 3 dB above the sensitivity limit. 250 kHz
channel spacing
Alternate channel
rejection
31
dB Desired channel 3 dB above the sensitivity limit. 250 kHz
channel spacing
See Figure 22 for plot of selectivity versus frequency offset
10 kbps data rate, current optimized, MDMCFG2.DEM_DCFILT_OFF = 1
(FSK, 1% packet error rate, 20 bytes packet length, 232 kHz digital channel filter bandwidth)
Receiver sensitivity
–99
dBm The sensitivity can be improved to typically –101 dBm by
setting MDMCFG2.DEM_DCFILT_OFF = 0 . The typical
current consumption is in this case 17.3 mA at sensitivity
llimit.
Saturation
–9
dBm
Adjacent channel
rejection
18
dB Desired channel 3 dB above the sensitivity limit. 250 kHz
channel spacing
Alternate channel
rejection
25
dB Desired channel 3 dB above the sensitivity limit. 250 kHz
channel spacing
See Figure 23 for plot of selectivity versus frequency offset
250 kbps data rate, MDMCFG2.DEM_DCFILT_OFF = 0
(MSK, 1% packet error rate, 20 bytes packet length, 540 kHz digital channel filter bandwidth)
Receiver sensitivity
–89
dBm
Saturation
–13
dBm
Adjacent channel
rejection
21
dB Desired channel 3 dB above the sensitivity limit. 750 kHz
channel spacing
Alternate channel
rejection
30
dB Desired channel 3 dB above the sensitivity limit. 750 kHz
channel spacing
See Figure 24 for plot of selectivity versus frequency offset
PRELIMINARY Data Sheet (Rev.1.2) SWRS040A
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