基于DDS芯片AD9854的信号产生器设计

A signal generator based on AD9854

介绍了一种采用2片DDs芯片AD9854和单片机芯片AT98LS52设计的信号产生器,该信号产生器能够实 现输出信号的频率、相位和幅度的调整。文中讨论了波形产生方法和参数调整方法,分析了使用一个同步信号控 制2片AD9854对输出相位的影响。实测结果表明,本文所研究的方法和研制的系统是可行的、有效的。

This paper introduces the method of developing signal generator that uses two chips of AD9854, coupled with a chip of AT85LV52 to form frequency - phase - amplitude - programmable sine output. We illustrate not only the theory and means of synthesizing wave and the control of frequency, phase and amplitude, but also the details at phase error. The results of experiments have proved that the technique and system in this paper are feasible and effective.