Delay generator using a programmable resistor based on a phase-change material
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United States of America Patent
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Apr 21, 2015
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Dec 27, 2012
app pub date -
Jun 22, 2012
filing date -
Jun 27, 2011
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Abstract
A delay generator comprises at least one programmable resistor RPCM made of a chalcogenide-based phase-change material, said resistor RPCM being initialized, so as to generate a delay, in a way such that the resistance of the resistor RPCM equals a pre-set initial value R0 and such that the chalcogenide is in the amorphous phase, and a comparator comparing a reference electrical quantity that is stable over time with a variable electrical quantity representative of the resistance of the programmable resistor RPCM, the comparator generating a singularity signal s, said singularity being generated when the difference between the two electrical quantities changes sign.
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