參數(shù)資料
型號(hào)： NRF2402
廠商： Electronic Theatre Controls, Inc.
英文描述： Single chip 2.4 GHz Transmitter
中文描述： 2.4 GHz的單芯片發(fā)射機(jī)
文件頁數(shù)： 25/31頁
文件大小： 368K
代理商： NRF2402
PRODUCT SPECIFICATION
nRF2402/nRF2402G Single Chip 2.4 GHz Radio Transmitter
Nordic Semiconductor ASA -
Revision: 2.0
Vestre Rosten 81, N-7075 Tiller, Norway -
Page 25 of 31
Phone +4772898900
- Fax +4772898989
April 2005
Sharing crystal with micro controller
.
When using a micro controller to drive the crystal reference input XC1 of the
nRF2402/nRF2402G transmitter some rules must be followed.
Crystal parameters:
When the micro controller drives the nRF2402/nRF2402G XC1 input, all crystal load
parameters (C
L
, C
0
, ESR) are set by the micro controller specification. The frequency
accuracy (±30 ppm) is still set by the nRF2402/nRF2402G specification. The
nRF2402/nRF2402G will load the crystal circuitry of the micro controller by XC1 input
capacitance (0.5pF) plus PBC routing paracitics.
External reference input amplitude & Current consumption
The reference input should never have signal levels exceeding rail voltages. Exceeding rail
voltage will excite the ESD structure and the radio performance is degraded below
specification. Applying reference sources without DC bias will bring the reference signal
under GND level, and this 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 17
Principle of crystal oscillator
It is hence recommended to use a DC-block before the XC1 pin so that the internal ESD
structures will self bias the XC1 voltage.
The nRF2402/nRF2402G 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
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
nRF2402G 功能描述:射頻發(fā)射器 1.9-3.6V 1MBIT XMTR 2.4GHz SHCKBRST RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel
nRF2402G-REEL 功能描述:射頻發(fā)射器 1.9-3.6V 1MBIT XMTR 2.4GHz SHCKBRST RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel
nRF2402G-REEL7 功能描述:射頻發(fā)射器 1.9-3.6V 1MBIT XMTR 2.4GHz SHCKBRST RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel
NRF2402-REEL 制造商:Nordic Semiconductor 功能描述:
NRF2460-DK 功能描述:射頻開發(fā)工具 2.4 GHz ISM band 16 bit res RoHS:否 制造商:Taiyo Yuden 產(chǎn)品:Wireless Modules 類型:Wireless Audio 工具用于評(píng)估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V
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