Time-to-digital system and associated frequency synthesizer
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United States of America Patent
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May 19, 2015
Grant Date -
Apr 18, 2013
app pub date -
Apr 18, 2012
filing date -
Oct 17, 2011
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Abstract
A time-to-digital system, such as a frequency synthesizer, includes a power management circuit and a time-to-digital converter (TDC). Said power management circuit is coupled to a frequency reference clock and a variable clock, and arranged to output a delayed frequency reference clock and a single pulse of said variable clock ahead of a transition of said delayed frequency reference clock. Said TDC is coupled to said power management circuit and arranged to produce a digital TDC output.
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