參數(shù)資料
型號(hào): EM2420EK
廠商: Electronic Theatre Controls, Inc.
英文描述: 2.4 GHz IEEE 802.15.4 / ZigBee RF Transceiver
中文描述: 2.4 GHz IEEE 802.15.4標(biāo)準(zhǔn)/ ZigBee的射頻收發(fā)器
文件頁數(shù): 11/89頁
文件大小: 1758K
代理商: EM2420EK
EM2420
Ember Part Number: 120-0049-000
C
EM2420 Datasheet
Page 11 of 89
Parameter
Min.
Typ.
Max.
Unit
Condition / Note
Spurious emission
30 – 1 GHz
1 – 12.75 GHz
-57
-47
dBm
dBm
Complies with EN 300 440,
CFR47, Part 15 and ARIB STD-
T-66
Frequency error tolerance
-300
300
kHz
Difference between center
frequency of the received RF
signal and local oscillator
frequency
[1] requires 200 kHz
Symbol rate error tolerance
120
ppm
Difference between incoming
symbol rate and the internally
generated symbol rate
[1] requires 80 ppm
RSSI / Carrier Sense
Carrier sense level
-77
dBm
Programmable in
RSSI.CCA_THR
RSSI dynamic range
100
dB
The range is approximately from
–100 dBm to 0 dBm
RSSI accuracy
±
6
dB
See page 48 for details
RSSI linearity
±
3
dB
RSSI average time
128
μ
s
8 symbol periods, as specified by
[1]
IF Section
Intermediate frequency (IF)
2
MHz
Frequency Synthesizer Section
Crystal oscillator frequency
16
MHz
See page 55 for details.
Crystal frequency accuracy
requirement
-40
40
ppm
Including aging and temperature
dependency, as specified by [1]
Crystal operation
Parallel
C4 and C5 are loading
capacitors, see page 55
Crystal load capacitance
12
16
20
pF
16 pF recommended
Crystal ESR
60
Crystal oscillator start-up time
0.86
ms
16 pF load
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