Threshold extracting method and circuit using the same
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United States of America Patent
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Sep 30, 1997
Grant Date -
N/A
app pub date -
Dec 19, 1995
filing date -
Dec 30, 1994
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A transistor threshold extraction circuit including at least two transistors of the same type each having a control terminal and having essentially a same threshold voltage, each of the two transistors also having first and second main conduction terminals, a current mirror circuit having at least two input-output terminals with the two terminals coupled respectively to the two transistors so as to supply bias currents, a voltage generator connected between the two control terminals, and a feedback path between the control terminals and one of the input-output terminals. An output of the extraction circuit is coupled to one of the control terminals.
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