| 可变通道可变速率A／D变换板的设计与实现 |
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| 引用本文： | 王正垠.可变通道可变速率A／D变换板的设计与实现[J].数据采集与处理,1993,8(4):316-319. |
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| 作者姓名： | 王正垠 |
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| 作者单位： | 西北工业大学水声工程研究所 西安 |
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| 摘 要： | 本文介绍的A/D变换板输入通道数任意选择。各通道前量放大器增益可灵活调整,输入电平范围宽广。各通道变换速率互不相同,并可灵活改变,通道均为严格等间隔采样。利用单路D/A变换可监视任一通道A/D变换结果。该模板可直接插入PC/XT/AT及其兼容机中作为A/D卡使用。本变换板利用多片高速A/D变换器异步并行工作,达到了甚高速A/D变换器的变换速率。
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| 关 键 词： | 模－数转换器 通道 速率 变换板 |
Design and Realization of an A/D Board with Variable Channels and Variable Rate |
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| Wang Zhengyin.Design and Realization of an A/D Board with Variable Channels and Variable Rate[J].Journal of Data Acquisition & Processing,1993,8(4):316-319. |
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| Authors: | Wang Zhengyin |
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| Abstract: | The paper proposes an A/D board whose input channels can be arbitrarily selected and the gain of front amplifier for each channel can be adjusted with ease. The input voltage range is wide. The sampling rate for each channel can be adjusted independently, and the sampling interval is strictly constant within each channel, with a single-channel D/A convertor, the A/D result of any channel can be monitored. This board acts as an A/D card when inserted into PC/XT/AT or compatiable computers. With several high-speed A/D chips operating parallelly and asynchonously, this board reaches an ultrahigh speed. |
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| Keywords: | A-D Converters multichannel circuits gain control data acquisition |
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