摘要
介绍了DDS(直接数字频率合成器)芯片AD7008的基本原理、内部结构及接口编程方式,并以其为核心,结合单片机AT89C52的灵活控制,设计了一种高精度正弦波信号的发生电路,给出了硬件接口电路和软件程序。
This paper introduces the basic principle, internal construction and interface method of a DDS chip called AD7008. Combining the flexible control of chip microcomputer AT89C52, an electric circuit for generating high accuracy sine wave signal is designed based on AD7008. At last, this paper gives out the hardware interface circuit and the software procedure detailed list.
出处
《电子工程师》
2005年第5期19-21,共3页
Electronic Engineer
