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Automatic Range Switching of a Dual Integration A/D convertor
Author(s): 
Pages: 67-68
Year: Issue:  6
Journal: ELECTRONIC ENGINEER

Keyword:  A/D转换器量程转换过量程/欠量程;
Abstract: 介绍了一种双积分式A/D转换器在宽范围量程测量中的自动量程转换技术.在测量仪表的输入通道中,用计数器对双积分型A/D转换器本身所固有的过量程/欠量程信号计数,计数器的输出作为量程编码去控制量程的选择,同时又是送到CPU的量程指示信号.该技术扩大了A/D转换量程,提高了精度,设计简单,工作可靠.
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