Zero drift analog memory cell, array and method of operation
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United States of America Patent
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Feb 21, 2006
Grant Date -
Jan 13, 2005
app pub date -
Apr 12, 2004
filing date -
Apr 11, 2003
priority date (Note) -
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Abstract
A zero-drift analog memory (ZDAM) cell that indefinitely maintains an output signal at a discrete voltage while the memory circuit is powered, wherein the memory circuit receives an input signal, passes the input signal to a storage element upon receiving an assertion signal, maintains an output signal at a level of the input signal when the assertion signal is removed, and utilizes a zero-drift transfer function feedback loop on the output signal to maintain the output signal. A memory array including a plurality of ZDAM cells and method of operation are also disclosed.
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