摘要
采用直接数字频率合成(DDS)技术产生信号,具有输出频率精确度高,控制调节方便等优点。介绍了DDS技术的基本原理,分析了如何应用DDS芯片AD9850、单片机以及运算放大器设计交流信号发生器。
Using direct digital frequency synthesizer (DDS) technology to generate signal, it has advantages such as high output accurate, easy to be controlled and so on. This paper firstly introduces the basic principle of direct digital frequency synthesizer (DDS) technology. Then it describes how to use DDS chip AD9850, microcontroller and operational amplifier to design a function generator with alternating current output.
出处
《重庆科技学院学报(自然科学版)》
CAS
2009年第1期98-99,115,共3页
Journal of Chongqing University of Science and Technology:Natural Sciences Edition
关键词
直接数字频率合成
信号发生器
单片机
direct digital frequency synthesizer
function generator
microcontroller