原标题：Silabs Si4313单端通用ISM频段接收方案

　　Silabs 公司的Si4313是单端通用ISM频段接收器，工作频率240–960 MHz，灵敏度–118 dBm，数据速率0.2 - 128 kbps，采用FSK, GFSK和OOK调制方案，电源电压1.8 到3.6 V，主要用在遥控，健康监视器，气象站和个人数据资料记录。本文介绍了Si4313主要特性，功能方框图，应用案例图和参考测试板电路图。

　　The Si4313 is a single-ended universal ISM receiver for cost-sensitive applications featuring technology developed for the EZRadioPRO® product family.

　　The Si4313 offers a simple, single-ended radio implementation over the 240–960 MHz frequency range. A receive sensitivity of up to –118 dBm allows for the creation of communication links with an extended range. The Si4313 offers excellent receiver performance in cost-sensitive radio applications.

　　The Si4313 provides designers with advanced features to enable low system power consumption by offloading a number of RF-related activities from the system MCU allowing for extended MCU sleep periods.

　　Additional features, such as an automatic wake-up timer, 64-byte RX FIFO, and a preamble detection circuit, are available. The Si4313’s digital receive architecture features an ADC and DSP based modem that performs the radio demodulation and filtering for increased performance.

　　Si4313主要特性:

　　Frequency range = 240–960 MHz

　　Sensitivity = –118 dBm

　　Low power consumption

　　Data rate = 0.2 to 128 kbps

　　FSK, GFSK, and OOK modulation schemes

　　Power supply = 1.8 to 3.6 V

　　Ultra low power shutdown mode

　　Digital RSSI

　　Wake-up timer

　　Auto Frequency Calibration (AFC)

　　Clear channel assessment

　　Programmable RX BW 2.6–620 kHz

　　Preamble detector

　　RX 64 byte FIFO

　　–40 to +85℃ temperature range

　　Integrated voltage regulators

　　Frequency hopping capability

　　On-chip crystal tuning

　　20-pin QFN package

　　Low BOM

　　Single capacitor matching network

　　Power-On-Reset (POR)

　　Single-ended antenna Configuration

　　Si4313应用:

　　Remote control

　　Weather station

　　Personal data logging

　　Health monitors

　　图1。Si4313功能方框图

　　图2。Si4313应用案例图