AS3900設(shè)計(jì)的低功耗FSK收發(fā)方案
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本文介紹了低功耗星形網(wǎng)絡(luò)收發(fā)器AS3900主要特性, 方框圖以及典型應(yīng)用框圖.
Aaustriamicrosystems公司的AS3900是低功耗27MHz FSK收發(fā)器,適用于電池工作的短距離范圍設(shè)備(SRD)的應(yīng)用.數(shù)據(jù)速率高達(dá)210kbps,器件可配置成收發(fā)器,發(fā)送器或接收器,工作頻段為27.12MHz的ISM.輸出功率可調(diào)整到0, +5, +10 dBm,并集成了基于OOK的叫醒系統(tǒng). AS3900的工作電壓2.2V-3.6V,接收功耗3.8mA,接收靈敏度-85dBm, 10dBm功率時(shí)的發(fā)送功耗為4.9mA,關(guān)斷電流最大為700nA,主要用在設(shè)備間短距離數(shù)據(jù)交換,數(shù)據(jù)傳輸,家庭和工業(yè)網(wǎng)絡(luò)控制以及交互式遙控.
AS3900Applications
The AS3900 is ideal for reliable low-power short-range data exchange, data transfer among devices in close proximity of human body (Body Area Networks), simple control networks (home, industry), and interactive remote controls. A typical application can be designed in combination with a microcontroller, an antenna and a few additional passive components.
圖1.低功耗星形網(wǎng)絡(luò)收發(fā)器AS3900方框圖
圖2.低功耗星形網(wǎng)絡(luò)收發(fā)器AS3900典型應(yīng)用框圖
圖3.AS3900應(yīng)用框圖
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