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參數(shù)資料
| 型號(hào)： | OL2381AHN |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 微波射頻器件 |
| 英文描述： | Highly Integrated Single Chip Sub 1-GHz RF Transceiver |
| 封裝： | OL2381AHN<SOT617-3 (HVQFN32)|<<http://www.nxp.com/packages/SOT617-3.html<1<Always Pb-free,; |
| 文件頁數(shù)： | 34/43頁 |
| 文件大小： | 2978K |
| 代理商： | OL2381AHN |
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AN11017
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Application note
Rev. 2 — 10 May 2011
34 of 43
NXP Semiconductors
AN11017
Transceiver OL2381 using wireless M-BUS
7.3 RX current reduction
The current consumption of battery powered receivers is an issue. To prolong battery life,
the OL2381 implements several automatic functions, most of which run without the host
controller and with reduced current consumption.
An example of the following functions can be found in the general application note
AN11039; refer to
Ref. 2
Polling timer
The host controller and OL2381 are in Power-down mode. The OL2381 awakes
automatically at the desired time and goes into
→
WUPS mode. If no valid telegram is
recognized, it re-enters the Power-down mode. The use of signal monitors is
recommended to enable fast recognition. The host controller is not involved.
WUPS
If OL2381 is awake, the signal is analyzed regarding strength, coding, and timing.
During this state, the gain of the LNA is set to HI_GAIN or LO_GAIN. If conditions are
satisfied, the OL2381 enters
→
preamble detection mode. If no conditions are set, the
OL2381 enters
→
preamble detection mode The host controller is not involved.
Preamble detection
If the signal is in the correct range, the preamble is sought. If the preamble is found,
an interrupt starts the host controller. The OL2381 enters
→
data reception mode.
Data reception
If preamble is found, the host controller obtains data from the OL2381.
Using this mechanism, the mean current consumption could be reduced. The reduction
depends mainly on the setup of the polling timer.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OL2381AHN/C0B,515 | 功能描述:射頻收發(fā)器 Single Chip 1-GHz 射頻收發(fā)器 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 |
| OL2381AHN/C0B515 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
| OL2385AHN/00100Y | 功能描述:RF WIRELESS PLATFORM UHF 制造商:nxp usa inc. 系列:- 包裝:剪切帶（CT） 零件狀態(tài):在售 類型:TxRx + MCU 射頻系列/標(biāo)準(zhǔn):- 協(xié)議:- 調(diào)制:ASK，F(xiàn)SK 數(shù)據(jù)速率（最大值）:- 功率 - 輸出:14dBm 靈敏度:-124dBm 存儲(chǔ)容量:- 串行接口:SPI，UART GPIO:12 電壓 - 電源:1.9 V ~ 5.5 V 電流 - 接收:- 電流 - 傳輸:29mA 工作溫度:-40°C ~ 85°C 封裝/外殼:48-VFQFN 裸露焊盤 標(biāo)準(zhǔn)包裝:1 |
| OL2385AHN/001A0Y | 功能描述:LOW-POWER MULTI-CHANNEL UHF RF W 制造商:nxp usa inc. 系列:- 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 類型:TxRx + MCU 射頻系列/標(biāo)準(zhǔn):- 協(xié)議:- 調(diào)制:ASK，F(xiàn)SK 數(shù)據(jù)速率（最大值）:- 功率 - 輸出:14dBm 靈敏度:-124dBm 存儲(chǔ)容量:- 串行接口:SPI，UART GPIO:12 電壓 - 電源:1.9 V ~ 5.5 V 電流 - 接收:- 電流 - 傳輸:29mA 工作溫度:-40°C ~ 85°C 封裝/外殼:48-VFQFN 裸露焊盤 標(biāo)準(zhǔn)包裝:1 |
| OL2405 | 制造商:Ohmite Mfg Co 功能描述: |
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