Methods and apparatus for sensor diagnostics

US11313899B2 · kind B2 · utility

Assignee

• Allegro MicroSystems, LLC · US

Inventors

• Shaun D. Milano · Dunbarton, US
• Georges El Bacha · Manchester, US
• Michael C. Doogue · Bedford, US
• David J. Haas · Suffern, US
• Gregory Delmain · Maple Grove, US
• Michael J. Gaboury · Burnsville, US
• William P. Taylor · Amherst, US

Key dates

• Filing date: Oct 17, 2019
• Grant date: Apr 26, 2022
• Expiry date: Dec 2, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L2924/181
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Methods and apparatus for providing an integrated circuit having a drive current source, a magnetic sensing element coupled to the drive current source, the magnetic sensing element having first and second differential outputs, and first and second current elements to provide respective currents in relation to the drive current source, wherein the first current element is coupled to the first differential output and the second current element is coupled to the second differential output. In illustrative embodiments, an IC output can output a voltage corresponding to the currents of the first and second current elements.