Digital Potentiometer Using Third Dimensional Memory
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United States of America Patent
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Issued Date -
Aug 30, 2012
app pub date -
Apr 24, 2012
filing date -
Dec 22, 2008
priority date (Note) -
Abandoned
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Abstract
A digital potentiometer using third dimensional memory includes a switch configured to electrically couple one or more resistive elements with a first pin and a second pin, and a non-volatile register configured to control the switch. In one example, the non-volatile register can include a BEOL non-volatile memory element, such as a third dimensional memory element. The non-volatile register can include a FEOL active circuitry portion that is electrically coupled with the BEOL non-volatile memory element to implement the non-volatile register. The resistive elements can be BEOL resistive elements that can be fabricated on the same plane or a different plane than the BEOL non-volatile memory elements. The BEOL non-volatile memory elements and the BEOL resistive elements can retain stored data in the absence of power and the stored data can be non-destructively determined by application of a read voltage.
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