公开(公告)号：US09712184B2

公开(公告)日：2017-07-18

申请号：US15197398

申请日：2016-06-29

Applicant: NXP B.V.

Inventor： Lucien Johannes Breems ,  Muhammed Bolatkale

IPC: H03M3/00

CPC classification number: H03M3/422 ,  H03M3/376 ,  H03M3/42 ,  H03M3/452 ,  H03M3/454 ,  H03M3/464 ,  H03M3/50

Abstract: A sigma-delta modulator comprising a plurality of filter stages in series with each other, wherein at least one of the plurality of filter stages is configured to provide a filter-output-signal; and a plurality of gain stages, each gain stage configured to provide a gain-output-signal. The sigma-delta modulator also includes a filter-output-switching-element configured to selectively couple the filter-output-signal to an input terminal of one of the plurality of gain stages; and a plurality of filter-input-switching-elements. Each of the plurality of filter-input-switching-elements is associated with one of the plurality of filter stages, wherein the plurality of filter-input-switching-elements are configured to selectively couple one of the gain-stage-output-signals to an input terminal of its associated one of the plurality of filter stages.