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參數(shù)資料
| 型號： | CC2420DK |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | LC2MOS 5 O RON SPST Switch; Package: PDIP; No of Pins: 16; Temperature Range: Industrial |
| 中文描述： | 2.4 GHz IEEE 802.15.4標(biāo)準(zhǔn)/ ZigBee功能的RF收發(fā)器 |
| 文件頁數(shù)： | 56/87頁 |
| 文件大?。?/td> | 1418K |
| 代理商： | CC2420DK |
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SmartRF
CC2420
System Considerations and Guidelines
SRD regulations
International regulations and national laws
regulate the use of radio receivers and
transmitters. SRDs (Short Range Devices)
for license free operation are allowed to
operate in the 2.4 GHz band worldwide.
The most important regulations are ETSI
EN 300 328 and EN 300 440 (Europe),
FCC CFR-47 part 15.247 and 15.249
(USA), and ARIB STD-T66 (Japan).
Frequency hopping and multi-channel
systems
The 2.4 GHz band is shared by many
systems both in industrial, office and home
environments.
CC2420
sequence spread spectrum (DSSS) as
defined by [1] to spread the output power,
thereby making the communication link
more robust even in a noisy environment.
uses
direct
With
CC2420
it is also possible to combine
both DSSS and FHSS (frequency hopping
spread spectrum) in a proprietary non-
IEEE 802.15.4 system. This is achieved
by reprogramming the operating frequency
(see
the
Frequency
Programming section on page 49) before
enabling
RX
or
synchronisation scheme must then be
implemented within the proprietary MAC
layer to make the transmitter and receiver
operate on the same RF channel.
and
Channel
TX.
A
frequency
Data burst transmissions
The data buffering in
CC2420
lets the user
have a lower data rate link between the
microcontroller and the RF device than the
RF bit rate of 250 kbps. This allows the
microcontroller to buffer data at its own
speed, reducing the workload and timing
requirements.
The relatively high data rate of
CC2420
also
reduces
the
consumption compared to the 868 / 915
MHz bands defined by [1], where only 20 /
40 kbps are available.
CC2420
may be
powered up a smaller portion of the time,
so that the average power consumption is
average
power
reduced for a given amount of data to be
transferred.
Crystal accuracy and drift
A crystal accuracy of ±40 ppm is required
for compliance with IEEE 802.15.4 [1].
This accuracy must also take ageing and
temperature drift into consideration.
A crystal with low temperature drift and
low aging could be used without further
compensation. A trimmer capacitor in the
crystal oscillator circuit (in parallel with C7)
could be used to set the initial frequency
accurately.
For non-IEEE 802.15.4 systems, the
robust demodulator in
CC2420
allows up to
120 ppm total frequency offset between
the transmitter and receiver. This could
e.g. relax the accuracy requirement to 60
ppm for each of the devices.
Optionally in a star network topology, the
FFD could be equipped with a more
accurate crystal thereby relaxing the
requirement on the RFD. This can make
sense in systems where the RFDs ship in
higher volumes than the FFDs.
Communication robustness
CC2420
provides very good adjacent,
alternate and co channel rejection, image
frequency
suppression
properties. The
CC2420
performance is
significantly better than the requirements
imposed by [1]. These are highly important
parameters for reliable operation in the 2.4
GHz band, since an increasing number of
devices/systems are using this license
free frequency band.
and
blocking
Communication security
The
authentication
enable secure communication, which is
required for many applications. Security
operations
require
processing, which is costly in a 8-bit
microcontroller system. The hardware
support within
CC2420
enables a high level
hardware
encryption
and
operations
in
CC2420
a
lot
of
data
Chipcon AS
SmartRF
CC2420 Preliminary Datasheet (rev 1.2), 2004-06-09
Page 56 of 87
相關(guān)PDF資料 |
PDF描述 |
|---|---|
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| CC5003GAP | ISOLATED RESISTOR NETWORK |
| CC5003DG | ISOLATED RESISTOR NETWORK |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CC2420EMK | 功能描述:Zigbee/802.15.4開發(fā)工具 CC2420 EVALUATION KT (2)PCBs & (2)ANTENNA RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評估:EM35x 頻率:2.4 GHz 接口類型:USB 工作電源電壓: |
| CC2420RGZ | 制造商:Texas Instruments 功能描述:IC, RF TXRX, 2400MHZ TO 2483.5MHZ, QLP48; Frequency Min:2.4GHz; Frequency Max:2.4835GHz; Modulation Type:O-QPSK; Receiving Current:18.8mA; Transmitting Current:17.4mA; RF IC Case Style:QLP; No. of Pins:48; Supply Voltage Min:1.6V |
| CC2420RGZR | 制造商:Texas Instruments 功能描述:IC, RF TXRX, 2400MHZ TO 2483.5MHZ, QLP48; Frequency Min:2.4GHz; Frequency Max:2.4835GHz; Modulation Type:O-QPSK; Data Rate:250Kbps; Receiving Current:18.8mA; RF IC Case Style:QLP; No. of Pins:48; Supply Voltage Min:1.6V ;RoHS Compliant: Yes |
| CC2420RGZT | 制造商:Texas Instruments 功能描述:IC RF TXRX ZIGBEE 2.4GHZ 48VQFN |
| CC2420-RTB1 | 功能描述:射頻收發(fā)器 Sgl-Chip 2.4GHz IEEE & ZigBee Ready RF RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
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