CC2420 Datasheet, PDF (11/87 Pages) List of Unclassifed Manufacturers – 2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver

SmartRF ^® CC2420
Parameter
RSSI dynamic range
RSSI accuracy
Min.
Typ.
100
Max. Unit
dB
±6
dB
Condition / Note
The range is approximately from
–100 dBm to 0 dBm
See page 47 for details
RSSI linearity
RSSI average time
IF Section
±3
dB
128
µs
8 symbol periods, as specified by
[1]
Intermediate frequency (IF)
2
MHz
Frequency Synthesizer Section
Crystal oscillator frequency
16
MHz
See page 52 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 52
Crystal load capacitance
12
16
20
pF
16 pF recommended
Crystal ESR
60
Ω
Crystal oscillator start-up time
0.86
ms
16 pF load
Phase noise
−109
−117
−117
−117
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
Unmodulated carrier
At ±1 MHz offset from carrier
At ±2 MHz offset from carrier
At ±3 MHz offset from carrier
At ±5 MHz offset from carrier
PLL loop bandwidth
PLL lock time
50
kHz
192
µs
The startup time from the crystal
oscillator is running and RX / TX
turnaround time
Digital Inputs/Outputs
Logic "0" input voltage
0
0.3*
V
DVDD
Signal levels are referred to the
voltage level at pin DVDD3.3
Logic "1" input voltage
0.7*
DVDD
DVDD V
Chipcon AS SmartRF^® CC2420 Preliminary Datasheet (rev 1.2), 2004-06-09
Page 11 of 87