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參數(shù)資料
| 型號(hào)： | NRF902 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Single chip 868 MHz Transmitter |
| 中文描述： | 單芯片868兆赫發(fā)射機(jī) |
| 文件頁數(shù)： | 8/13頁 |
| 文件大小： | 160K |
| 代理商： | NRF902 |
PRELIMINARY PRODUCT SPECIFICATION
nRF902 Single chip 868 MHz Transmitter
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989
Revision: 1.0
Page 8 of 13
April 2000
Power Down mode
Power Down mode is used to achieve very low current consumption. Effectively the
chip is disabled with minimal leakage current consumption, typically less than 10nA.
Operating in this mode when not transmitting data, i.e. low duty cycle systems can
significantly increase battery lifetime.
The resistor R1 connected from the crystal pin towards VDD supplies the crystal
oscillator with bias current (see Figure 9). When this resistor is connected to VSS or
left open, the chip enters Power Down mode. As shown in Figure 9 the resistor R1 is
connected to the “Power Down” terminal, this can be controlled by a micro-controller,
hence eliminating the need to switch off the power supply to the chip when not
transmitting. Start-up time when switching from Power Down mode to Transmit
mode is approximately 2 ms.
X1 13.567MHz
REXT
xtal
XO8
VDD
1
2
3
4
VDD
C1
C2
VDD
Clock
Output
R2
R1
Matching Network/
Antenna
FSK
VSS
8
ant1
Data
Input
ant2
Power
Down
7
6
5
nRF902
Figure 9. FSK transmitter in Power Down mode
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參數(shù)描述 |
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| NRF903 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Evaluation board |
| NRF903G | 制造商:Nordic Semiconductor 功能描述: |
| NRF903G-REEL | 制造商:Nordic Semiconductor 功能描述: |
| NRF904 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Wireless Component application notes/nRF904， RF and Antenna Layout |
| nRF905 | 功能描述:射頻收發(fā)器 1.9-3.6V 433/868/ 915MHz TRNSCVR 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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