Circuit for matching semiconductor device behavior
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United States of America Patent
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Sep 14, 2010
Grant Date -
Aug 7, 2008
app pub date -
Apr 8, 2008
filing date -
Aug 23, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A selection circuit. The selection circuit comprises a logic circuit, an array of sub-circuits and a switching circuit electrically coupled to each other. The selection circuit is subjected to a first operating condition. The switching circuit selects a group of sub-circuits from the array. The selection circuit generates a first frequency. The selection circuit is subjected to a second operating condition that is different from the first operating condition and generates a second frequency. A first frequency differential between the first frequency and the second frequency is compared to a predetermined frequency differential to determine if the first frequency differential is about equal to the predetermined frequency differential.
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