基于PSOC的DDS信号发生器设计  

Design of DDS Signal Generator Based on PSOC

作　　者：韩旭[1] 于小亿[1] 

机构地区：[1]兰州大学信息科学与工程学院,兰州730000

出　　处：《电测与仪表》2012年第3期85-88,共4页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(61170244)

摘　　要：DDS(直接数字频率合成,direct digital frequency synthesis)是一种全数字化设计信号发生器的方法。基于PSOC(programming system on chip)芯片技术,以Creator集成环境作为设计开发平台,实现DDS信号发生器各个模块的功能。根据DDS的结构和原理,推导得到参考频率与输出频率间的关系。利用Creator提供的固件元件,给出了元件的属性配置和使用方法。该设计充分体现了PSOC集成度高,图形化编程在嵌入式系统设计中的优势。DDS（Direct Digital Synthesizer）is a fully digitized resolution to design the signal generator.Based on PSOC（programming system on chip）technology,the functions of each module in DDS signal generator have been implemented with the IDE—PSoC Creator—as the development platform.According to the structure and principles of DDS,the relationship between the reference frequency and the output frequency has been deduced.Besides,with the help of firmware components provided by Creator,the configuration for properties and the using mode are given.This design fully demonstrates the advantage of high integration level and graphical programming method in embedded system design.

关 键 词：PSOC DDS 信号发生器 相位累加器 数模转换器 查找表 

分 类 号：TM935[电气工程—电力电子与电力传动]