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. 02, 2026
Filed:
Aug. 31, 2023
Texas Instruments Incorporated, Dallas, TX (US);
Qunying Li, Allen, TX (US);
Shanmuganand Chellamuthu, Richardson, TX (US);
Harish Kumar, Frisco, TX (US);
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
A circuit includes an anisotropic magnetoresistance (AMR) sensor; an operational amplifier; and a calibration circuit. The AMR sensor has a first terminal, a second terminal, a third terminal, and a fourth terminal. The operational amplifier has a first terminal, a second terminal, a third terminal, and a fourth terminal. The first terminal of the operational amplifier is coupled to the second terminal of the AMR sensor. The second terminal of the operational amplifier is coupled to the third terminal of the AMR sensor. The calibration circuit is coupled to the first terminal of the operational amplifier. The calibration circuit is configured to provide an adjustable offset trim voltage at the first terminal of the operational amplifier to cancel out an offset voltage generated by the AMR sensor.