Analog/digital converter that employs phase comparison
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United States of America Patent
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Nov 23, 2004
Grant Date -
May 8, 2003
app pub date -
Nov 5, 2002
filing date -
Nov 5, 2001
priority date (Note) -
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Abstract
An analog/digital converter includes a first transfer circuit which receives an input voltage and outputs an output clock signal having a phase delay that is dependent on the input voltage, a second transfer circuit which receives a reference voltage and an input clock signal and outputs a reference clock signal having a phase delay that is dependent on the reference voltage, and a comparator which compares the output clock signal and the reference clock signal and outputs a digitally-coded output signal that is based on the result of the phase comparison of the output clock signal and the reference clock signal.
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