SYSTEM AND METHOD OF GALVANIC ISOLATION IN DIGITAL SIGNAL TRANSFER INTEGRATED CIRCUITS UTILIZING CONDUCTIVITY MODULATION OF SEMICONDUCTOR SUBSTRATE
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United States of America Patent
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Mar 5, 2013
Grant Date -
Mar 14, 2013
app pub date -
Sep 12, 2011
filing date -
Sep 12, 2011
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Abstract
A galvanic isolation system provides galvanic isolation in digital transfer integrated circuits by using conductivity modulation of the semiconductor substrate. Modulation of the conductivity of the substrate affects eddy current losses of a (differential) RF inductor that is isolated from the substrate by a sufficient amount of dielectric material, which provides a basis for signal transfer from the modulated substrate to the inductor across the isolation barrier.
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