| 基于单片机的逐次比较型AD转换电路设计 |
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| 引用本文： | 张英平,张朝阳.基于单片机的逐次比较型AD转换电路设计[J].阜阳师范学院学报(自然科学版),2014(2):54-57. |
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| 作者姓名： | 张英平 张朝阳 |
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| 作者单位： | 吉林师范大学信息技术学院,吉林四平136000 |
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| 基金项目： | 基金项目：吉林省科技发展计划基金项目（201205075）资助. |
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| 摘 要： | 针对现有的逐次比较型AD转换器的时钟控制信号是由硬件产生的弊端,提出了基于单片机产生控制信号由分立元件搭建的逐次比较型A/D转换电路的设计方案,保证了转换过程的同步性和电路的低成本。结果表明,该转换电路转换速度可达8000次/秒,具有12位分辨率,适合于中等或高等的分辨率场合。
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| 关 键 词： | 逐次比较型 AD转换 单片机 转换速度 分辨率 |
Successive approximation type AD conversion circuit based on microcontroller |
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| ZHANG Ying-ping,ZHANG Chao-yang.Successive approximation type AD conversion circuit based on microcontroller[J].Journal of Fuyang Teachers College:Natural Science,2014(2):54-57. |
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| Authors: | ZHANG Ying-ping ZHANG Chao-yang |
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| Institution: | (Institute of Information and Technology, Jilin Normal University, Siping Jilin 136000, China) |
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| Abstract: | The existing Successive Approximation Type AD Converter has a disadvantage that its clock control signal is gener-ated by the hardware. Therefore, the design scheme in which the Successive Approximation Type A/ D Conversion Circuit was built by the discrete components and its control signal was generated on the basis of microcontroller was proposed. The new design en-sured synchronization of the conversion process and low cost of the circuit. The results showed that the conversion rate of the conver-sion circuit is up to 8000 times per second, with 12 bit resolution, suitable for medium or higher resolution. |
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| Keywords: | successive approximation type A/ D conversion microcontroller conversion rate resolution |
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