Invention Grant
- Patent Title: Tilted segmented anisotropic magneto-resistive angular sensor
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Application No.: US15633516Application Date: 2017-06-26
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Publication No.: US10782154B2Publication Date: 2020-09-22
- Inventor: Byron Jon Roderick Shulver , Dok Won Lee
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Jacqueline J. Garner; Charles A. Brill; Frank D. Cimino
- Main IPC: G01D5/16
- IPC: G01D5/16 ; G01R33/09

Abstract:
An integrated AMR sensor includes a half bridge with two resistors, a Wheatstone bridge with four resistors, or a first Wheatstone bridge with four resistors in an orthogonal configuration, and a second Wheatstone bridge with four resistors in an orthogonal configuration, oriented at 45 degrees with respect to the first Wheatstone bridge. Each resistor includes first magnetoresistive segments with current flow directions oriented at a first tilt angle with respect to a reference direction of the resistor, and second magnetoresistive segments with current flow directions oriented at a second tilt angle with respect to the reference direction. The tilt angles are selected to advantageously cancel angular errors due to shape anisotropies of the magnetoresistive segments. In another implementation, the disclosed system/method include a method for identifying tilt angles which cancel angular errors due to shape anisotropies of the magnetoresistive segments.
Public/Granted literature
- US20180372511A1 TILTED SEGMENTED ANISOTROPIC MAGNETO-RESISTIVE ANGULAR SENSOR Public/Granted day:2018-12-27
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