Data Sheet

CC1101
SWRS061B Page 10 of 93
4.2 RF Receive Section
Tc = 25°C, VDD = 3.0V if nothing else stated. All measurement results are obtained using the CC1101EM reference designs
([5] and [6]).
Parameter Min Typ Max Unit Condition/Note
Digital channel filter
bandwidth
58 812 kHz User programmable. The bandwidth limits are proportional to
crystal frequency (given values assume a 26.0 MHz crystal).
315 MHz, 1.2 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(2-FSK, 1% packet error rate, 20 bytes packet length, 5.2 kHz deviation, 58 kHz digital channel filter bandwidth)
Receiver sensitivity -111 dBm Sensitivity can be traded for current consumption by setting
MDMCFG2.DEM_DCFILT_OFF=1. The typical current
consumption is then reduced from 17.2 mA to 15.4 mA at
sensitivity limit. The sensitivity is typically reduced to -109 dBm
315 MHz, 500 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0 (MDMCFG2.DEM_DCFILT_OFF=1
cannot be used for data rates > 250 kBaud)
(MSK, 1% packet error rate, 20 bytes packet length, 812 kHz digital channel filter bandwidth)
-88 dBm
433 MHz, 1.2 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(GFSK, 1% packet error rate, 20 bytes packet length, 5.2 kHz deviation, 58 kHz digital channel filter bandwidth
Receiver sensitivity -112 dBm Sensitivity can be traded for current consumption by setting
MDMCFG2.DEM_DCFILT_OFF=1. The typical current
consumption is then reduced from 18.0 mA to 16.0 mA at
sensitivity limit. The sensitivity is typically reduced to -110 dBm
433 MHz, 38.4 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(GFSK, 1% packet error rate, 20 bytes packet length, 20 kHz deviation, 100 kHz digital channel filter bandwidth)
Receiver sensitivity –104 dBm
433 MHz, 250 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(MSK, 1% packet error rate, 20 bytes packet length, 127 kHz deviation, 540 kHz digital channel filter bandwidth)
Receiver sensitivity -95 dBm
868 MHz, 1.2 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(2-FSK, 1% packet error rate, 20 bytes packet length, 5.2 kHz deviation, 58 kHz digital channel filter bandwidth)
Receiver sensitivity –111 dBm Sensitivity can be traded for current consumption by setting
MDMCFG2.DEM_DCFILT_OFF=1. The typical current
consumption is then reduced from 18.0 mA to 15.7 mA at
sensitivity limit. The sensitivity is typically reduced to -109 dBm
Saturation –14 dBm
FIFOTHR.CLOSE_IN_RX=0
Adjacent channel
rejection
37 dB Desired channel 3 dB above the sensitivity limit. 100 kHz
channel spacing
Alternate channel
rejection
37 dB Desired channel 3 dB above the sensitivity limit. 100 kHz
channel spacing
See Figure 24 for plot of selectivity versus frequency offset
Image channel
rejection,
868MHz
31 dB IF frequency 152 kHz
Desired channel 3 dB above the sensitivity limit.
868 MHz, 38.4 kBaud data rate, sensitivity optimized
(GFSK, 1% packet error rate, 20 bytes packet length, 20 kHz deviation, 100 kHz digital channel filter bandwidth)
Receiver sensitivity –103 dBm
Saturation –16 dBm
Adjacent channel
rejection
20 dB Desired channel 3 dB above the sensitivity limit. 200 kHz
channel spacing
Alternate channel
rejection
30 dB Desired channel 3 dB above the sensitivity limit. 200 kHz
channel spacing
See Figure 25 for plot of selectivity versus frequency offset
Image channel
rejection,
868MHz
23 dB IF frequency 152 kHz
Desired channel 3 dB above the sensitivity limit.