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:
Nov. 18, 2008
Filed:
Feb. 04, 2005
Lukas Doerrer, Villach, AT;
Franz Kuttner, St. Ulrich, AT;
Lukas Doerrer, Villach, AT;
Franz Kuttner, St. Ulrich, AT;
Infineon Technologies AG, Munich, DE;
Abstract
The invention relates to a power-saving multibit delta-sigma converter () comprising: an input () for an analog input signal (ZA) and an output () for a digital output signal (ZD); a digital-to-analog converter () having a bit width N and serving to convert the digital output signal (ZD) to an analog feedback signal (Z); a summing device () for solving the difference between the input signal (ZA) and the feedback signal (Z); a filter () for filtering the difference signal (Z); and a clocked quantizing device () for quantizing the filtered difference signal (Z) into a digital output signal (ZD) with the bit width N. Said quantizing device () comprises a number of comparators () that compare the filtered signal (Z) with a respective reference potential (UU) associated with each comparator () and they each output a comparison result (VVV) to a decoder (), which generates the digital output signal (ZD) from the comparison results (VVV), and the reference potentials (U. . . U) are updated according to a previous comparison result.