CC2420RTCR Datasheet, PDF (11/94 Pages) Texas Instruments – 2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver

Parameter
Frequency error tolerance
Symbol rate error tolerance
Data latency
CC2420
Min.
-300
Typ.
3
Max. Unit
300
kHz
120
ppm
s
Condition / Note
Difference between centre
frequency of the received RF
signal and local oscillator
frequency
[1] requires 200 kHz
Difference between incoming
symbol rate and the internally
generated symbol rate
[1] requires 80 ppm
Processing delay in receiver.
Time from complete transmission
of SFD until complete reception
of SFD, i.e. from SFD goes
active on transmitter until active
on receiver.
6.4 RSSI / Carrier Sense
Parameter
Carrier sense level
Min.
Typ.
− 77
RSSI dynamic range
100
RSSI accuracy
6
Max.
Unit
dBm
dB
dB
Condition / Note
Programmable in
RSSI.CCA_THR
The range is approximately from
–100 dBm to 0 dBm
See page 48 for details
RSSI linearity
3
dB
RSSI average time
128
s
8 symbol periods, as specified by
[1]
6.5 IF Section
Parameter
Intermediate frequency (IF)
Min.
Typ.
2
Max.
Unit
MHz
Condition / Note
6.6 Frequency Synthesizer Section
Parameter
Crystal oscillator frequency
Min.
Typ.
16
Max.
Unit
MHz
Condition / Note
See page 53 for details.
Crystal frequency accuracy
- 40
requirement
40
ppm
Including aging and temperature
dependency, as specified by [1]
Crystal operation
Parallel
C381 and C391 are loading
capacitors, see page 53
SWRS041c
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