CC2400_07 Datasheet, PDF (11/83 Pages) Texas Instruments – 2.4 GHz Low-Power RF Transceiver

CC2400
10 RSSI / Carrier Sense section
Parameter
RSSI range / Carrier sense range
RSSI settling time
RSSI accuracy
Min.
Typ.
80
20
±4
Max.
Unit Condition / Note
For 1Mbps and 1 MHz channel
width.
dB (The range is from –100 dBm to
–20 dBm typically)
s
dB See page 44 for details
Table 6 RSSI / Carrier sense characteristics
11 IF section
Parameter
Intermediate frequency (IF)
Digital channel filter bandwidth
Min.
Typ.
1
Max.
Unit Condition / Note
MHz
125
1000
kHz The digital channel filter 6dB-
bandwidth is programmable in
steps: 125, 250, 500 and 1000
kHz. See page 39 for details.
Table 7 IF characteristics
12 Frequency Synthesizer section
Parameter
Crystal oscillator frequency
Crystal frequency accuracy
requirement
Crystal operation
Crystal load capacitance
Crystal ESR
Crystal oscillator start-up time
Phase noise
PLL loop bandwidth
Min.
12
Typ.
16
Parallel
16
1.13
-108
-114
-114
50
Max. Unit Condition / Note
MHz See page 49 for details.
20
±ppm The total crystal frequency
accuracy, i.e. initial tolerance plus
aging and temperature
dependency, will determine the
frequency accuracy of the
transmitted signal. 1 Mbps FSK,
250 kHz deviation.
C4 and C5 are loading
capacitors, see page 49
20
pF 16 pF recommended
60
Ω
ms 16 pF load
Note: This time can be reduced to
15 s by enabling the XOSC core
in power-down using the
MANAND register.
dBc/Hz
dBc/Hz
dBc/Hz
Unmodulated carrier
At ±1 MHz offset from carrier
At ±2 MHz offset from carrier
At ±5 MHz offset from carrier
kHz
SWRS042A
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