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. 09, 2002
Filed:
Jan. 18, 2000
Eric T. King, Temple, NH (US);
Douglas F. Pastorello, Hudson, NH (US);
Bruce P. Del Signore, Hollis, NH (US);
Victor Aguilar, Nashua, NH (US);
Frank Den Breejen, Austin, TX (US);
William F. Gardei, Derry, NH (US);
Cirrus Logic, Inc., Austin, TX (US);
Abstract
An analog to digital converter system includes first and second delta sigma converters, a calculation engine, and a serial interface on a single chip. The calculation engine is configured to calculate energy, power, rms current and voltage for single phase or wire power meters. Voltage and current are measured with a shunt or transformer, and a divider or transformer, respectively. The serial interface is bidirectional for communication with a microprocessor or controller, and provides a fixed width programmable frequency output proportional to energy. The digital converter system is user system calibratible.