摘要 |
An approach to rejecting input common-mode voltage variations in a sampler/converter that avoids the use of a differential amplifier in the signal path, and without introducing added distortion or noise. In one embodiment, the input common-mode variations are sensed on a pair of matched resistors that straddle the common mode analog inputs, on a node 'Vcmi'. An alternative, switched-capaci tor- based sensing scheme is also possible. Using this measured Vcmi, adjustments are then made to the rest of the sampler/converter to take out any variations observed at Vcmi. |
申请人 |
KENET, INC.;KUSHNER, LAWRENCE, J.;ANTHONY, MICHAEL, P.;FISHER, JOHN, S. |
发明人 |
KUSHNER, LAWRENCE, J.;ANTHONY, MICHAEL, P.;FISHER, JOHN, S. |