Successive comparison type analog/digital converter, physical quantity sensor, electronic device, moving object, and successive comparison type analog/digital conversion method
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United States of America Patent
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Mar 7, 2017
Grant Date -
Oct 1, 2015
app pub date -
Mar 24, 2015
filing date -
Mar 25, 2014
priority date (Note) -
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Abstract
A successive approximation type AD converter includes a charge redistribution type DA conversion circuit, a comparator, and a control circuit. The charge redistribution type DA conversion circuit is configured such that each of k unit elements connects a switch and a unit capacitance in series and includes a unit capacitor array that is connected to a common output line in parallel and a selector that selects one voltage supplied to one input terminal, through m voltage supply lines, among at least three input terminals of switches included in j unit elements which are the targets for dynamic element matching (DEM) in k unit elements based on the DEM.
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