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| 一种简易高精度频率信号发生器的设计与实现 | |
| 引用本文： | 石晓明,申小中. 一种简易高精度频率信号发生器的设计与实现[J]. 现代电子技术, 2006, 29(10): 14-16 |
| 作者姓名： | 石晓明 申小中 |
| 作者单位： | 无锡商业职业技术学院,江苏,无锡,214063 |
| 摘 要： | 直接数字频率合成(DDS)技术转换时间短,相位变化连续,全数字可编程等优点突出。介绍了一种高度集成化的DDS专用芯片AD9833,并利用该芯片与单片机AT89S52结合,设计了一种简易的高精度频率信号发生器。给出了本设计的硬件结构与部分关键程序的流程框图,同时给出了该芯片在实际设计中的结果,并对结果进行了简单分析,探讨了DDS芯片与微处理器的接口方式。工作表明,DDS技术在信号源设计领域有广阔的应用前景。 |
| 关 键 词： | 频率信号发生器 DDS 单片机 AD9833 |
| 文章编号： | 1004-373X（2006）10-014-03 |
| 收稿时间： | 2005-10-25 |
| 修稿时间： | 2005-10-25 |
Design and Implementation of a Simply High-accuracy Frequency Signal Genarator |
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| SHI Xiaoming,SHEN Xiaozhong. Design and Implementation of a Simply High-accuracy Frequency Signal Genarator[J]. Modern Electronic Technique, 2006, 29(10): 14-16 | |
| Authors: | SHI Xiaoming SHEN Xiaozhong |
| Affiliation: | Wuxi Institute of Commerce, Wuxi, 214063, China |
| Abstract: | 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. |
| Keywords: | frequency signal generator DDS single chip AD9833 |
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