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Selectivity (continued)
Figure 2-3. Typical Selectivity at 250-kBaud Data Rate, 868 MHz, GFSK,
IF Frequency 304 kHz, Digital Channel Filter Bandwidth 540 kHz
2.7
RSSI Section Characteristics
V
= 1.8 V to 3.3 V, All voltages refer to GND (unless otherwise noted). Typical values at T
DD
parameters valid for CC1101 and CC1131 only.
PARAMETER
RX mode, 100-kHz RX bandwidth, Reference signal
CW , –90-dBm power level. Read RSSI status register
and calculate measured RSSI level.
RSSI accuracy, 310 MHz
RX mode, 100-kHz RX bandwidth, Reference signal
CW , –20-dBm power level. Read RSSI status register
and calculate measured RSSI level.
RX mode, 100-kHz RX bandwidth, Reference signal
CW , –90-dBm power level. Read RSSI status register
and calculate measured RSSI level.
RX mode, 100-kHz RX bandwidth, Reference signal
RSSI accuracy, 928 MHz CW , –55-dBm power level. Read RSSI status register
and calculate measured RSSI level.
RX mode, 100-kHz RX bandwidth, Reference signal
CW , –20-dBm power level. Read RSSI status register
and calculate measured RSSI level.
(1) RSSI tolerances can be compensated by an offset correction for each device.
Copyright © 2009–2010, Texas Instruments Incorporated
50.0
40.0
30.0
20.0
10.0
0.0
-10.0
-20.0
-3.00
-2.25
1.50
-1.00
-0.75
Frequency offset [MHz]
(1)
TEST CONDITIONS
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SWRS076B – 11-07-22-013 - APRIL 2009 – REVISED APRIL 2010
0.00
0.75
1.00
1.50
2.25
T
A
–40°C to 105°C
125°C
–40°C to 105°C
125°C
–40°C to 105°C
125°C
–40°C to 105°C
125°C
–40°C to 105°C
125°C
CC11x1-Q1
3.00
= 25°C, V
= 3 V. Receive
A
DD
MIN
TYP
MAX
–90
–20
–97
–89
–82
–91
–62
–54
–45
–56
–27
–19
–10
–21
Electrical Specifications
UNIT
dBm
dBm
11
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