摘要：AD9852是美国ANALOGDEVICES公司生产的新型直接数字频率合成器(DDS)，具有频率转换速度快(小于lt~s)、频谱纯度高、工作温度范围宽(一25℃～+85℃)、集成度高等特点，是一种使用方便灵活、功能较强的芯片。AD9852由带有48位相位累加的数控振荡器、可墒程参考时钟倍乘器、反向正弦滤波器、计数倍乘器、两个300MHz12住数模转换器、高速模拟比较器和接口逻辑组成。可用于本振合成回路，高精度时钟发生器和FSK／／3PSK调制。文中介绍了AD9852的工作原理、引脚功能以厦具体应用。 -Abstract: AD9852 is Analog Devices Inc. The United States produced a new type of direct digital synthesizers (DDS), with frequency conversion speed (less than lt ~ s), the spectrum of high purity, the working temperature range of width (1 25 ℃ ~+ 85 ℃) , high integration, is a flexible and easy to use, more powerful chips. AD9852 by a cumulative 48 DCO phase can be moisture-way Multiplier times the reference clock, reverse sine filter, multiplying count, two 300MHz12 live digital, high-speed analog comparator, and interface logic composition. Can be used in the synthesis loop vibration, high-precision clock generator and FSK// 3PSK modulation. This paper introduces the working principle of AD9852, pin functions to specific application of Xiamen.