| 基于AD9255的数据采集系统设计与分析 |
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| 引用本文： | 王贵冬,冯晓东.基于AD9255的数据采集系统设计与分析[J].数字通信,2013(6):64-67. |
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| 作者姓名： | 王贵冬 冯晓东 |
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| 作者单位： | 重庆邮电大学 电信业务支撑系统研究所，重庆 400065;重庆邮电大学 电信业务支撑系统研究所，重庆 400065 |
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| 摘 要： | 简要介绍AD9255的性能与特点,并结合FPGA设计1个数据采集系统,完成同步接收、数字下变频、FFT以及频谱显示等操作。设计中,着重分析对同步采样有较大影响的异步数据同步接收模块。同时,简要说明Dither技术在AD采样中的应用,并深入探究AD9255的可选片内抖动功能,最后根据实验数据给出该可选片内抖动功能的作用效果。
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| 关 键 词： | AD9255 同步采样 无杂散动态比 Dither |
Design and analysis of data acquisition system based on AD9255 |
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| WANG Guidong and FENG Xiaodong.Design and analysis of data acquisition system based on AD9255[J].Digital Communication,2013(6):64-67. |
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| Authors: | WANG Guidong and FENG Xiaodong |
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| Affiliation: | ( The Telecom Services Support System Research Institute of Chongqing University of Posts and Telecommunications Chongqing 400065, P. R. China) |
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| Abstract: | The performance and characteristic of AD9255 are simply introduced in the paper .The paper establishes a data acquisition system, based on FPGA(field programmable gate array). The system completes a series of operations, such as synchronized sampling, DDC, FFT and spectrum display. The paper focuses on the analysis of asynchronous data synchronization receiving module, which has a great influence on synchronized sampling. Meanwhile, the paper briefly describe the application of dithering in analog to digital conversion and goes deeply into on chip dither option of AD9255. According to the experimental data, the effects of the on chip dither option are listed. |
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| Keywords: | AD9255 synchronized sampling SFDR（ spurious free dynamic ratio） Dither |
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