摘要
本文采用直接数字式频率合成技术DDS,以AD9852、AD9833芯片为核心,由单片机控制,设计了一种结构简单性能优良的波形发生器,可输出正、余弦波,方波、三角波等。该波形发生器具有频率分辨率高,频率切换快,频带宽及全数字化易于集成等诸多优点,应用范围十分广泛。
Based on direct digital frequency synthesis （DDS）, the AD9852 ＆ AD9833 chips as the core, the MCU control, a kind of waveform generator, with a simple structure and excellent performance, that can output sine and cosine wave, square wave, triangle wave, is designed. This function generator has a wide range of applications, because it has characteristic by many virtues, for instance, a higher frequency resolution, faster frequency-switching, wide frequency bandwidth and easy integration of digital technology.
出处
《自动化技术与应用》
2011年第8期56-59,65,共5页
Techniques of Automation and Applications
关键词
波形发生器
DDS
频率合成
控制字
waveform generator
direct digital synthesis frequency synthesis
control word
