Mismatch and noise insensitive sense amplifier circuit for STT MRAM

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United States of America Patent

PATENT NO 9343131
SERIAL NO

14629875

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Abstract

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A technique for sensing a data state of a data cell. A comparator has a first input at a node A and a second input at a node B. A first n-channel transistor is connected to a first p-channel transistor at the node A. A second n-channel transistor is connected to a second p-channel transistor at the node B. A multiplexer is configured to selectively connect a first reference cell or the data cell to the first n-channel transistor and configured to selectively connect the data cell or a second reference cell to the second n-channel transistor. The comparator outputs the data state of the data cell based on input of a node A voltage at the node A and a node B voltage at the node B.

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Patent Owner(s)

Patent OwnerAddress
INTERNATIONAL BUSINESS MACHINES CORPORATIONOLD ORCHARD ROAD ARMONK N Y 10504

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
DeBrosse, John K Colchester, US 74 1376

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