基于DDS芯片AD5930信号发生器的设计与实现

Design and Implementation of the Signal Generator Based on the DDS Chip AD5930

提出一种以直接数字合成(DDS-Direct Digital Synthesis)技术为基础的信号发生器的设计。采用单片机MSP430F149控制DDS芯片AD5930产生信号频率范围可调的正弦信号,同时通过16位DA芯片AD5662实现信号幅度调节。该信号发生器控制方便灵活,电路结构简单,同时具备低功耗和低成本的特点,具有非常广阔的应用前景。

A design of signal generator is proposed based on the Direct Digital Synthesis（DDS） technique. The adjustable frequency and range of the Sinusoidal signals are generated by a DDS chip AD5930, which is controlled by the single chip MSP430F149. Meanwhile, amplitude adjustment is realized through the 16 digits DA chip. This signal generator with simple circuit structure can be controlled conveniently and flexibly. It also has the advantages of low power consumption and low costs, which will be very useful in practical usage and have a broad prospect of application.