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:
Jun. 09, 2009
Filed:
Mar. 14, 2008
Paulo Gustavo Raymundo Silva, Delft, NL;
Michael Hendrikus Laurentius Kouwenhoven, Zoetermeer, NL;
Paulo Gustavo Raymundo Silva, Delft, NL;
Michael Hendrikus Laurentius Kouwenhoven, Zoetermeer, NL;
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A sigma-delta difference-of-squares RMS-to-DC converter and method for performing such a conversion in which an analog feedback signal is combined with an analog input signal, following which the combined signals are multiplied to produce an analog product signal that includes at least one signal component corresponding to a difference between a square of the analog feedback signal and a square of the analog input signal. This analog product signal is filtered and digitized to produce a digital output signal to be available for use downstream in or with the host system, with such digital output signal also being converted to the analog feedback signal.