Integrated bias and offset recovery amplifier
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United States of America Patent
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-
Mar 4, 2008
Grant Date -
Aug 4, 2005
app pub date -
Sep 30, 2004
filing date -
Jan 30, 2004
priority date (Note) -
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Abstract
A preamplifier circuit is connected to a transducing head, and has integrated bias circuitry and offset recovery circuitry. The offset recovery circuitry is activated in response to a transition from write mode to read more to provide an output signal representative of a signal across the transducing head. The bias circuitry is driven by the output signal of the offset recovery circuitry to bias the transducing head.
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