Delta-sigma modulator
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United States of America Patent
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Sep 22, 2015
Grant Date -
Jul 16, 2015
app pub date -
Jun 19, 2014
filing date -
Jan 13, 2014
priority date (Note) -
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Abstract
Provided is a delta-sigma modulator including a summer summing an input signal and an analog signal, a first integrator integrating an output signal from the summer and outputting a first integration signal, a second integrator integrating the first integration signal and outputting a second integration signal, a comparator comparing the second integration signal and a reference signal and outputting a digital signal according to the comparison result, and a digital-to-analog converter converting the digital signal into an analog signal in response to a clock signal and outputting the converted analog signal, wherein the second integrator operates based on an Nth order (where N is natural number of 1 or greater) transfer function.
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