Single-ended-to-differential converter with common-mode voltage control
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United States of America Patent
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Sep 21, 2010
Grant Date -
Jun 30, 2005
app pub date -
Feb 17, 2005
filing date -
Mar 26, 2002
priority date (Note) -
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Abstract
Provided is a circuit to perform single-ended to differential conversion while providing common-mode voltage control. The circuit includes a converter to convert a single-ended signal to a differential signal and a stabilizing circuit adapted to receive the differential signal. The stabilizing circuit includes a sensor configured to sense a common-mode voltage level of the differential signal and a comparator having an output port coupled to the converter. The comparator is configured to compare the differential signal common-mode voltage level with a reference signal common-mode voltage level and produce an adjusting signal based upon the comparison. The adjusting signal is applied to the converter via the output port and is operative to adjust a subsequent common-mode voltage level of the differential signal.
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