AD9954是美国AD公司采用先进的DDS技术生产的高集成度频率合成器，它能产生200MHz的模拟正弦波。文章介绍了AD9954的基本特点和引脚功能，分析了其内部结构和工作原理，给出了AD9954在高速调制信号系统中的应用方案。-AD9954 is AD using advanced DDS technology to produce a high level of integration of the frequency synthesizer that can generate the analog sine wave 200MHz. This paper introduces the basic features of AD9954 and pin functions, an analysis of its internal structure and working principle, given the AD9954 high-speed modulation signal system applications.