APPARATUS COMPRISING A DIFFERENTIAL AMPLIFIER CIRCUIT AND AN EXTRACTION CIRCUIT
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United States of America Patent
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Nov 17, 2015
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May 17, 2013
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Abstract
An apparatus with two pairs of lines including a first and second channel further includes a phantom channel that is implemented to provide a third channel without physically installing lines. Based on a differential signal, a first common-mode signal level is generated at a first output of a differential amplifier circuit, and a second common-mode signal level on a second output, and the first common-mode signal level is applied to the lines of the first pair of lines and the second common-mode signal level to the lines of the second pair of lines. An extraction circuit is implemented to extract common-mode portions on the lines of the first pair of lines and the lines of the second pair of lines.
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