Systems and methods for randomizing component mismatch in an ADC
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United States of America Patent
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Feb 11, 2014
Grant Date -
May 9, 2013
app pub date -
Nov 7, 2012
filing date -
Nov 7, 2011
priority date (Note) -
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Abstract
Circuits and methods for converting a signal from analog to digital. A random number generator provides a random number to a memory. The memory is preconfigured to include codes of predetermined digital to analog (DAC) configurations that provide the maximum amount of DAC gradient suppression. At least one Flash reference generation DAC (FRGD) has an input coupled to the memory unit and an output providing a reference voltage level for its respective Flash comparator. The Flash comparators compare the analog input signal to their respective reference voltage and provide a digital output signal based on the comparison.
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