Pipeline ADC and reference load balancing circuit and method to balance reference circuit load
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United States of America Patent
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Aug 29, 2017
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app pub date -
Sep 9, 2015
filing date -
Sep 10, 2014
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Abstract
Disclosed examples include pipeline ADC, balancing circuits and methods to balance a load of a reference circuit to reduce non-linearity and settling effects for a reference voltage signal, in which balancing capacitors are connected to a voltage source in a pipeline stage ADC sample time period to precharge the balancing capacitors using a voltage above the reference voltage, and a selected set of the precharged balancing capacitors is connected to provide charge to the output of the reference circuit during the second time period.
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