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:
Dec. 24, 2024
Filed:
Mar. 01, 2023
Allegro Microsystems, Llc, Manchester, NH (US);
Hernán D. Romero, Buenos Aires, AR;
Allegro MicroSystems, LLC, Manchester, NH (US);
Abstract
Magnetic field closed loop sensors including offset reduction circuitry to reduce undesired baseband components attributable to offset associated with magnetoresistance elements are described. A superimposed signal including a main signal portion indicative of a parameter of a target and an offset reduced signal portion is coupled to feedback circuitry. The feedback circuitry generates a feedback signal to drive a feedback coil. Main processing circuitry is operative to extract the main signal portion from the superimposed signal and produce a sensor output signal based on the main signal portion. Example offset reduction circuitry can take the form of AC coupling circuitry or a ripple reduction loop.