基于DDS的多功能信号发生器的设计

Design of the multiple-function Signal Generator Based on DDS

介绍了DDS工作原理,设计了一种采用单片机STC89C52控制DDS芯片AD9850的信号发生器系统。实验结果表明,该系统可产生幅度和频率分别可调的正弦波、方波与三角波等波形,且信号输出稳定。

This essay mainly introduced the basic principle of DDS and the design of signal generator system which is based on DDS chip of AD9850 controled by a singlechip STC89C52. Experiment results indicate that the system can generate steady sine wave, square wave and triangular wave.