The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 2008
Filed:
Jan. 22, 2007
Christian Ebner, München, DE;
Gerhard Mitteregger, Taufkirchen, DE;
Christian Ebner, München, DE;
Gerhard Mitteregger, Taufkirchen, DE;
National Semiconductor Germany AG, Unterhaching, DE;
Abstract
The invention concerns a time-continuous delta-sigma analog-digital converter for the conversion of an analog input signal into a digital output signal, comprising an analog filter for the filtering of the analog input signal, a clocked operated quantiser, which contains at least one comparator () and which quantises the filtered analog signal outputted through the analog filter for the generation of the digital output signal, and a feedback arrangement with at least one digital-analog converter, which supplies to the analog filter at least one feedback signal on the basis of the digital output signal. According to the invention a calibration device () linked with the quantiser is stipulated, which is designed to determine at a predetermined point in time an offset error of the comparator () and subsequently to compensate for this (Itrim).