Duty cycle comparator
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United States of America Patent
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Feb 23, 2010
Grant Date -
Oct 2, 2008
app pub date -
Mar 29, 2007
filing date -
Mar 29, 2007
priority date (Note) -
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Abstract
A duty cycle comparator is described for comparing the duty cycles of two digital signals. The duty cycle comparator comprises a first controllable current source, a second controllable current source and a charge accumulation device. The comparator provides an output signal that is representative of the difference between the duty cycles independent of the frequency of the two digital signals.
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