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:
Apr. 12, 2022
Filed:
Mar. 27, 2019
Allegro Microsystems, Llc, Manchester, NH (US);
Steven Daubert, Bedford, NH (US);
David J. Haas, Concord, NH (US);
Craig S. Petrie, Merrimack, NH (US);
Milan Valenta, Hostivice, CZ;
Roman Prochazka, Struharov, CZ;
Richard Stary, Dolni Brezany, CZ;
Sina Haji Alizad, Manchester, NH (US);
Allegro MicroSystems, LLC, Manchester, NH (US);
Abstract
A current sensor integrated circuit to sense a current through a resistor includes a substrate, a tub disposed in the substrate, an analog front end disposed in the tub and comprising an amplifier having inputs coupled across the resistor and a charging circuit configured to bias the analog front end and the tub to a bias voltage that is a predetermined offset voltage greater than a common mode voltage associated with the resistor. In embodiments, the analog front end is biased to a first bias voltage and the tub is biased to a second, different bias voltage.