Design and Implementation of a Simply Highaccuracy Frequency Signal Genarator
Xiaozhong Shen · Modern Electronics Technique · 2006
Direct Digital Frequency Synthesis technology(DDS) has advantages in short hopping time,continous phase change,complete digital control program and so on.This paper introduces a special DDS chip AD9833,and a simply highaccuracy frequency signal generator is designed with this chip and a single chip computer AT89S52.In the paper the hardware structure and the key software program is introduced,the result of this apply with this chip is given and analysed,also the interfere of this DDS chip to microprocessor is described.The work in this paper shows the DDS technique has excellent apply fortune in signal generator design.