HopeRF基于Silabs Si4431的RFM23B ISM收发方案

HopeRF公司的RFM22B/23B是 ISM收发器模块,采用Silabs 公司的Si4430/31/32 ISM收发器,而 Silabs 公司的Si4430/31/32的是高度集成的单片无线ISM收发器,具有极好的接收灵敏度(–121 dBm)以及业界最好的+20 dB输出功率,工作频率240–930 MHz (Si4431/32)或900–960 MHz (Si4430),工作电压1.8V-3.6V,主要用在遥控,家庭安全和告警,个人数据采集,玩具控制,无线PC外设,家庭自动化,工业控制,传感器网络以及健康监视等.本文介绍了Silabs 公司的Si4430/31/32主要特性,功能方框图, RX/TX Direct-Tie应用电路, 天线分集应用电路图, TX/RX Direct-Tie参考设计电路图以及HopeRF公司的RFM22B/23B ISM收发器模块主要特性,应用电路和参考设计电路.

Si4430/31/32 ISM TRANSCEIVER

Silicon Laboratories’ Si4430/31/32 devices are highly integrated, single chip wireless ISM transceivers. The high-performance EZRadioPRO® family includes a complete line of transmitters, receivers, and transceivers allowing the RF system designer to choose the optimal wireless part for their application.

The Si4430/31/32’s high level of integration offers reduced BOM cost while simplifying the overall system design. The extremely low receive sensitivity (–121 dBm) coupled with industry leading +20 dBm output power ensures extended range and improved link performance. Built-in antenna diversity and support for frequency hopping can be used to further extend range and enhance performance.
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