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US 2021/0263114 A1Published application
Target alignment and stray field indicator
AssigneeAllegro MicroSystems, LLC
InventorJeffrey Eagen
Life of this patent
Estimating the term…
Abstract
A magnetic field sensor is provided, including a substrate, a first bridge circuit formed on the substrate, the first bridge circuit being arranged to generate a first signal indicative of a motion of a target, and a second bridge circuit formed on the substrate, the second bridge circuit being arranged to generate a second signal indicative of whether the magnetic field sensor is aligned with the target.
Claims23
A magnetic field sensor, comprising:
- a substrate;
- a first bridge circuit formed on the substrate, the first bridge circuit being arranged to generate a first signal indicative of a motion of a target;
- and
- a second bridge circuit formed on the substrate, the second bridge circuit being arranged to generate a second signal indicative of whether the magnetic field sensor is aligned with the target.
1 more element
A magnetic field sensor comprising:
- a substrate having a first axis defining a first region and a second region, the first region and the second region being on opposite sides of the first axis;
- a first plurality of magnetic field sensing elements formed on the substrate, the first plurality of magnetic field sensing elements including a first magnetic field sensing element that is coupled in series with a second magnetic field sensing element, the first magnetic field sensing element being formed in the first region of the substrate and the second magnetic field sensing element being formed in the second region of the substrate;
- and
- a second plurality of magnetic field sensing elements formed on the substrate, the second plurality of magnetic field sensing elements including a third magnetic field sensing element that is coupled in series with fourth magnetic field sensing element, the third magnetic field sensing element formed in the first region of the substrate and a fourth magnetic field sensing element formed in the first region of the substrate.
1 more element
A magnetic field sensor comprising:
- a substrate having a first axis and a second axis that intersects the first axis;
- a first plurality of magnetic field sensing elements formed on the substrate, the first plurality of magnetic field sensing elements including a first magnetic field sensing element that is coupled in series with a second magnetic field sensing element, the first magnetic field sensing element and the second magnetic field sensing element being formed on opposite sides of the first axis and the second axis;
- a second plurality of magnetic field sensing elements formed on the substrate, the second plurality of magnetic field sensing elements including a third magnetic field sensing element that is coupled in series with a fourth magnetic field sensing element, the third magnetic field sensing element and the fourth magnetic field sensing element being formed on opposite sides of the first axis and the second axis, the second plurality of magnetic field sensing elements being electrically coupled to the first plurality of magnetic field sensing elements to form a first bridge circuit.
A magnetic field sensor, comprising:
- a substrate;
- a first bridge circuit formed on the substrate, the first bridge circuit being arranged to generate a first signal indicative of a motion of a target;
- and
- a means for generating a second signal indicative of whether the magnetic field sensor is aligned with the target.
1 more element
Dependencies are inferred from the claim text.