Zero crossing detector


Posted on Jun 2, 2012

This detector is useful in sine wave squaring circuits and A/D converters. The positive input may either be grounded or con-output nected a nulling voltage which cancels input offsets and enables accuracy to within microvolts of ground


Zero crossing detector
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The CMOS output will switch to within a few millivolts of either rail for an input voltage change of less than 200 µV.




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