基于ADF4350锁相频率合成器的频率源设计与实现

Design and Realization of Frequency Source Based on ADF4350 PLL Frequency Synthesizer

介绍了ADF4350锁相频率合成器的内部结构,在此基础上,分析和探讨了ADF4350锁相频率合成器的基本原理和工作特性。结合ADF4350的工作特性,给出了一种用AVR单片机控制ADF4350锁相频率合成器的频率源设计方法。对于环路滤波器,运用ADIsimPLL软件进行仿真和设计。通过对锁相环硬件电路的调试和编写相关单片机控制程序,实现了一个性能较好的频率源。

This paper introduces an internal structure of ADF4350 PLL frequency synthesizer and analyses the basic principle and operating characteristic of the ADF4350 PLL frequency synthesizer.Combined with characteristic of the ADF4350 PLL frequency synthesizer,the paper gives a design method of frequency source of ADF4350 PLL frequency synthesizer controlled by AVR Single-Chip Processor.The simulation software ADIsimPLL is utilized to simulate and design loop filter.Through debugging the hardware circuit of the Phase Locked Loop and writing the Single-Chip Processor program,a good performance frequency source is realized.