On-chip signal transformer for ground noise isolation
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United States of America Patent
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Oct 30, 2007
Grant Date -
Jul 6, 2006
app pub date -
Jan 6, 2005
filing date -
Jan 6, 2005
priority date (Note) -
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Abstract
A mixed-signal chip having a signal transformer located between analog circuitry and digital circuitry. The signal transformer includes a primary winding electrically coupled to the analog circuitry and a secondary winding electrically coupled to the digital circuitry. The primary and secondary windings are magnetically coupled with one another via a magnetic core. The magnetic coupling between the primary and secondary windings inhibits the coupling of electrical noise between the analog and digital circuitries.
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