Specifications

CC1101
SWRS061I Page 12 of 98
4.2 RF Receive Section
T
A
= 25C, VDD = 3.0 V if nothing else stated. All measurement results are obtained using the CC1101EM reference designs
([1] and [2]).
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)
Spurious emissions
-68
-66
–57
–47
dBm
dBm
25 MHz – 1 GHz
(Maximum figure is the ETSI EN 300 220 limit)
Above 1 GHz
(Maximum figure is the ETSI EN 300 220 limit)
Typical radiated spurious emission is -49 dBm measured at the
VCO frequency
RX latency
9
bit
Serial operation. Time from start of reception until data is
available on the receiver data output pin is equal to 9 bit
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 the
sensitivity limit. The sensitivity is typically reduced to -109 dBm
500 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(MSK, 1% packet error rate, 20 bytes packet length, 812 kHz digital channel filter bandwidth)
Receiver sensitivity
-88
dBm
MDMCFG2.DEM_DCFILT_OFF=1 cannot be used for data rates >
250 kBaud
433 MHz
0.6 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(GFSK, 1% packet error rate, 20 bytes packet length, 14.3 kHz deviation, 58 kHz digital channel filter bandwidth)
Receiver sensitivity
-116
dBm
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 the
sensitivity limit. The sensitivity is typically reduced to -110 dBm
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
250 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(GFSK, 1% packet error rate, 20 bytes packet length, 127 kHz deviation, 540 kHz digital channel filter bandwidth)
Receiver sensitivity
-95
dBm
868/915 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 17.7 mA to 15.7 mA at
sensitivity limit. The sensitivity is typically reduced to -109 dBm
Saturation
–14
dBm
FIFOTHR.CLOSE_IN_RX=0. See more in DN010 [8]
Adjacent channel
rejection
±100 kHz offset
37
dB
Desired channel 3 dB above the sensitivity limit.
100 kHz channel spacing
See Figure 4 for selectivity performance at other offset
frequencies
Image channel
rejection
31
dB
IF frequency 152 kHz
Desired channel 3 dB above the sensitivity limit