Semtech SX1231低功耗UHF RF收发器解决方案
Semtech 公司的SX1231是低功耗集成的UHF RF收发器,工作频率包括433, 868 和 915 MHz无许可证的ISM频段,所有主要的RF通信参数是可编程的,大多数可动态设定. SX1231在1.2kbps是的灵敏度高达-120dBm,采用16节的FIR通路滤波器,因而有好的选择性,可编程输出,从-18dBm到+17dBm, FSK, GFSK, MSK, GMSK 和OOK调制,主要用在自动读表, 无线传感器网络,家庭和建筑物自动化,无线告警和安全系统,工业监视和控制等.本文介绍了SX1231主要特性,方框图, 接收器和发送器方框图, 应用电路图以及+13dBm和+17dBm应用电路图, 评估板电路图和915MHz频率材料清单(BOM)与PCB布局图.
The SX1231 is a highly integrated RF transceiver capable of operation over a wide frequency range, including the 433, 868 and 915 MHz license-free ISM (Industry Scientific and Medical) frequency bands. Its highly integrated architecture allows for a minimum of external components whilst maintaining maximum design flexibility. All major RF communication parameters are programmable and most of them can be dynamically set. The SX1231 offers the unique advantage of programmable narrow-band and wide-band
communication modes without the need to modify external components. The SX1231 is optimized for low power consumption while offering high RF output power and channelized operation. TrueRF™ technology enables a lowcost external component count (elimination of the SAW filter) whilst still satisfying ETSI and FCC regulations.
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