AS3900设计的低功耗FSK收发方案

本文介绍了低功耗星形网络收发器AS3900主要特性, 方框图以及典型应用框图.

Aaustriamicrosystems公司的AS3900是低功耗27MHz FSK收发器,适用于电池工作的短距离范围设备(SRD)的应用.数据速率高达210kbps,器件可配置成收发器,发送器或接收器,工作频段为27.12MHz的ISM.输出功率可调整到0, +5, +10 dBm,并集成了基于OOK的叫醒系统. AS3900的工作电压2.2V-3.6V,接收功耗3.8mA,接收灵敏度-85dBm, 10dBm功率时的发送功耗为4.9mA,关断电流最大为700nA,主要用在设备间短距离数据交换,数据传输,家庭和工业网络控制以及交互式遥控.

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.


图1.低功耗星形网络收发器AS3900方框图

图2.低功耗星形网络收发器AS3900典型应用框图

图3.AS3900应用框图