Multi-bit pipeline analog-to-digital converter having merged capacitor switching structure
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United States of America Patent
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May 12, 2009
Grant Date -
Jun 5, 2008
app pub date -
Sep 20, 2007
filing date -
Nov 30, 2006
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Abstract
Provided is a multi-bit pipeline analog-to-digital converter (ADC) having a merged capacitor switching structure. In a multiplying digital-to-analog converter (MDAC) used in the multi-bit pipeline ADC, switches are connected between the bottom plates of respective differential capacitors, thereby constantly maintaining a uniform input common mode voltage regardless of an input digital code. Thus, it is possible to improve the operating speed and performance of the MDAC.
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