低功耗FSK超外差式接收电路设计

Low-Power FSK Superheterodyne Receiver Based

所设计的308 MHz/315 MHz/418 MHz/433.92 MHz低功耗FSK超外差式接收电路,采用MAX7042高集成度、低功耗,CMOS型超外差式射频(RF)接收芯片,灵敏度为-110^-109 dBm,接收频移键控(FSK)数据速率可达66 kbps(NRZ)(33kbps曼彻斯特编码);文中介绍了MAX7042的主要技术性能、内部结构、工作原理和应用电路.

The 308 MHz/315 MHz/418 MHz/433.92 MHz low power FSK Superheterodyne Receiver adopts high integrated, low power, CMOS Superheterodyne RF receiver chips in MAXT042,with a sensibility range from -110 dBm to -109 dBm ,receiving a FSK data which speed up to 66 kbps（NRZ） （33 kbps Manchester code）. This paper introduces the main performance and internal structure, principle and application circuit of MAX7042.