现代高速信息处理系统需要具备稳定精确的定时基准。系统设计人员长期以来依赖的是晶体振荡器的精度和稳定性。但是，由于系统频率的提晨以及市场竞争的压力，促使设计人员充分利用集成数字频率合成器的诸多优点，以缩短产品的开发周期。本文回顾了集成频率合成器的基本工作方 Modern high-speed information processing systems need to have a stable and accurate timing reference. System designers have long relied on the accuracy and stability of crystal oscillators. However, due to the rising system frequency and the pressure of market competition, designers are urged to make full use of the advantages of integrated digital frequency synthesizers to shorten the product development cycle. This article reviews the basic working principle of an integrated frequency synthesizer