Invention Grant
- Patent Title: Angle sensor with a single die using a single target
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Application No.: US17453577Application Date: 2021-11-04
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Publication No.: US11719527B2Publication Date: 2023-08-08
- Inventor: Rémy Lassalle-Balier
- Applicant: Allegro MicroSystems, LLC
- Applicant Address: US NH Manchester
- Assignee: Allegro MicroSystems, LLC
- Current Assignee: Allegro MicroSystems, LLC
- Current Assignee Address: US NH Manchester
- Agency: Daly, Crowley, Mofford & Durkee, LLP
- Main IPC: G01B7/30
- IPC: G01B7/30 ; G01D5/14 ; G01R33/07

Abstract:
In one aspect, an angle sensor includes magnetic-field sensing elements that include a first pair, a second pair, a third pair and a fourth pair of magnetic-field sensing elements; and processing circuitry configured to determine an angle of a rotating ring magnetic having a plurality of North-South pole pairs each having a unique period length. The processing circuitry includes a first bridge formed from the first and second pairs of magnetic-field sensing elements and a second bridge formed from the third and fourth pairs of magnetic-field sensing elements. The angle includes a value from 0° to 360°. The first, second, third and fourth pairs of magnetic-field sensing elements are each disposed on a first axis. The first, second, third and fourth pairs of magnetic-field sensing elements each have a sensitivity in a first direction along the first axis. The angle sensor is formed on a single die.
Public/Granted literature
- US20230134025A1 ANGLE SENSOR WITH A SINGLE DIE USING A SINGLE TARGET Public/Granted day:2023-05-04
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