摘要
介绍了基于直接数字合成技术(DDS)的正弦信号发生器的工作原理、系统结构及软硬件设计,该系统采用AD9850为核心芯片,以MSP430单片机为控制芯片,给出了AD9850子程序。系统能够实现高精度、宽频带、控制灵活的正弦信号输出。输出信号稳定不失真,工作性能可靠,具有广泛的应用前景。
Introduction was made to the working principle, system structure, and hardware and software design of sinewave signal generator based on direct digital synthetic technology （DDS）. The system adopted AD9850 as core chip, MSP430 microcontroller as control chip, giving out AD9850 subprogram. The system can realize high accuracy, wide frequency band, sinewave signal output which is flexible to control. The output signal is without distortion, reliable in working performance with broad application prospect.
