Comparator with reduced power consumption
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United States of America Patent
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Nov 9, 2010
Grant Date -
Jun 17, 2010
app pub date -
Dec 11, 2008
filing date -
Dec 11, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A comparator component having a comparison circuit and bias generator circuit, with the bias generator circuit also having a same number of transistors connected in an identical configuration, as those contained in the comparison circuit to generate a comparison result based on the bias signal generated by the bias generator circuit. A transistor of the comparison circuit receiving the bias signal is connected to a corresponding transistor in the bias generator circuit, in a current mirror configuration. The same bias circuit may be shared by many comparison circuits of corresponding comparator components. The features can be extended to provide hysteresis.
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