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參數(shù)資料
| 型號： | NRF2401A-EVKIT |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Single chip 2.4 GHz Transceiver |
| 中文描述： | 單片2.4GHz無線收發(fā) |
| 文件頁數(shù)： | 32/38頁 |
| 文件大?。?/td> | 263K |
| 代理商： | NRF2401A-EVKIT |
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PRODUCT SPECIFICATION
nRF2401A Single Chip 2.4 GHz Radio Transceiver
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -
Revision: 1.0
Phone +4772898900
-
Fax +4772898989
December 2004
Page 32 of 38
Sharing crystal with micro controller.
When using a micro controller to drive the crystal reference input XC1 of the
nRF2401A transceiver some rules must be followed.
Crystal parameters:
When the micro controller drives the nRF2401A clock input, the requirement of load
capacitance C
L
is set by the micro controller only. The frequency accuracy of 30 ppm
is still required to get a functional radio link. The nRF2401A will load the crystal by
0.5pF at XC1 in addition to the PBC routing.
Input crystal amplitude & Current consumption
The input signal should not have amplitudes exceeding any rail voltage, but any DC-
voltage within this is OK. Exceeding rail voltage will excite the ESD structure and the
radio performance is degraded below specification. If testing the nRF2401A with a
RF source with no DC offset as the reference source, the input signal will go below
the ground level, which is not acceptable.
XC1
XO_OUT
Amplitude
controlled
current source
Buffer:
Sine to
full swing
Current starved
inverter:
XOSC core
XC2
Vdd
Vss
ESD
Vdd
Vss
ESD
Figure 19
Principle of crystal oscillator
It is recommended to use a DC-block before the XC1 pin so that the internal ESD
structures will self bias the XC1 voltage .
The nRF2401A crystal oscillator is amplitude regulated. To achieve low current
consumption and also good signal-to-noise ratio, it is recommended to use an input
signal larger than 0.4 V-peak. The needed input swing is independent of the crystal
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| nRF2401AG | 功能描述:射頻收發(fā)器 1.9-3.6V 1MBIT XCVR 2.4GHz SHCKBRST 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 |
| nRF2401AG-REEL | 功能描述:射頻收發(fā)器 1.9-3.6V 1MBIT XCVR 2.4GHz SHCKBRST 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 |
| nRF2401AG-REEL7 | 功能描述:射頻收發(fā)器 1.9-3.6V 1MBIT XCVR 2.4GHz SHCKBRST 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 |
| NRF2401-AREEL | 制造商:Nordic Semiconductor 功能描述: |
| NRF2401-EVKIT | 制造商:Nordic Semiconductor 功能描述:2X BOARDS + 2 WHIP ANT. 2.4GHZ 制造商:Nordic Semiconductor 功能描述:EVALUATION KIT |
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