AD9854的DDS设计毕业论文.doc

毕业论文 AD9854的DDS设计 TOC \o 1-3 \h \u HYPERLINK \l _Toc2812 目录 HYPERLINK \l _Toc29959 1　绪论 l _Toc31366 1.1　当今频率合成技术分析 l _Toc5975 1.2　本课题研究目标 l _Toc4199 1.3　本文主要内容 l _Toc28766 2　DDS简介 l _Toc497 2.1　DDS构成及原理 l _Toc16384 2.2　DDS的性能参数 l _Toc22508 2.3　DDS频谱计算 l _Toc23184 2.4　杂散抑制 l _Toc29023 3　设计思想及方案 l _Toc5869 3.1 　开发环境与开发系统 l _Toc21951 3.2　芯片特点及功能介绍 l _Toc650 3.2.1　AD9854芯片特点及功能介绍 l _Toc6484 3.2.2　C8051F500芯片特点及功能 l _Toc12965 3.3　芯片管脚定义及串行操作 l _Toc28186 3.3.1　AD9854管脚定义及串行操作 l _Toc1075 3.3.2　C8051F500管脚定义及操作 l _Toc3182 3.4　单片机控制AD9854方案可行性分 l _Toc26712 4　具体设计及系统原理 l _Toc14908 4.1　具体电路图 l _Toc2394 4.1.1　AD9854电路图及分析 l _Toc11407 4.1.2 C8051f500电路图及分析 l _Toc13426 4.2 整体控制过程 l _Toc7858 4.2.1　C8051F500控制AD9854的原理 l _Toc5868 4.2.2 具体软件设计 l _Toc4927 5　硬件调试 l _Toc4464 5.1　PCB板的焊接与测试 l _Toc5845 5.2　整体调试结果 l _Toc14955 6　结论 l _Toc22859 6.1　本文内容小结 l _Toc12530 6.2　其他设计方案 l _Toc22932 参考文献 * MERGEFORMAT 1 PAGE \* MERGEFORMAT 1 ABSTRACT Nowadays, frequency synthesis technology has entered into digital synthesis directly namely DDS stage. As A new generation of frequency synthesis technology, it uses the digital control signal of the phase of the incremental technology. It can produce any waveform and its principle is storageing the wave produced by Nyquist quantitative storage into a register, then finish a wave form data memory addressing work by phase accumulators . In a certain system under the clock , and finally get analog signals by D/A digital-to-analog converters after converting .After some processes such as low pass filtering the user can get the signal they want. This papers mainly content is based on the theory of DDS and take C8051F500 chip as main control chip, using AD9854 chip to create a BPSK signal.The signal is highly stable, the output frequency is accurately, it has the good anti-disturbance capacity and the frequency resolution has higher advantages. In order to complete this paper, the mainly involve works are to familia