| DDS调制芯片AD7008的原理及应用 |
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| 引用本文： | 缪晓中. DDS调制芯片AD7008的原理及应用[J]. 电子工程师, 2006, 32(9): 25-28 |
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| 作者姓名： | 缪晓中 |
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| 作者单位： | 无锡职业技术学院电子工程系,江苏省,无锡市,214121 |
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| 摘 要： | 基于DDS(直接数字频率合成)专用芯片得到广泛应用,使得信号的产生与调制变得更为简单。介绍了DDS芯片AD7008的内部结构与工作原理,分析了采用AD7008实现正弦信号发生器、调幅、调频的方法,给出了基于89C51单片机与AD7008的软硬件设计方案。
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| 关 键 词： | DDS 频率控制字 幅度控制字 调幅 调频 |
| 收稿时间： | 2005-11-26 |
| 修稿时间： | 2006-03-02 |
Principle and Application of DDS Modulation Chip AD7008 |
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| MIAO Xiaozhong. Principle and Application of DDS Modulation Chip AD7008[J]. Electronic Engineer, 2006, 32(9): 25-28 |
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| Authors: | MIAO Xiaozhong |
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| Affiliation: | Wuxi Institute of Technology ,Wuxi 214121 ,China |
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| Abstract: | At present,the ASIC based on DDS technology has been widely used.As a result,the signal generation and modulation become more simple.This article introduces the construction and principle of operation on DDS chip AD7008,illustrates the method of how to utilize AD7008 to realize sine signals generation,amplitude modulation and frequency modulation,and presents the hardware and software design based on 89C51 and AD7008. |
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| Keywords: | DDS frequency control word amplitude control word amplitude modulation frequency modulation |
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