Short current-free effective capacitance test circuit and method
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United States of America Patent
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Sep 22, 2015
Grant Date -
Apr 16, 2015
app pub date -
Oct 11, 2013
filing date -
Oct 11, 2013
priority date (Note) -
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Abstract
A method of determining an effective capacitance of a ring oscillator free of short current. The method comprises determining a frequency of an oscillator signal communicated from a ring oscillator to an inverter via a first communication path. The first communication path has connectivity to a first voltage source, a ground path and the inverter. The first communication path is divided into a second communication path and a third communication path. The method further comprises determining a voltage line current. The method additionally comprises determining an effective capacitance of the ring oscillator based on a first voltage of the first voltage source, the voltage line current and the frequency of the oscillator signal communicated to the inverter along the third communication path.
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