Magnetic field sensors and associated methods with reduced offset and improved accuracy
US-2015316623-A1 · Nov 5, 2015 · US
Magnetic field sensor with improved accuracy resulting from a digital potentiometer
US9448288B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9448288-B2 |
| Application number | US-201414282664-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 20, 2014 |
| Priority date | May 20, 2014 |
| Publication date | Sep 20, 2016 |
| Grant date | Sep 20, 2016 |
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Abstract
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A magnetic field sensor with a plurality of magnetic field sensing elements is presented. The magnetic field sensor includes a sequences switches circuit to sequentially select from among the plurality of magnetic field signals. The magnetic field sensor further includes a memory device to store a plurality of potentiometer control values. Also included is a variable potentiometer to attenuate an offset of each one of the plurality of magnetic field signals by using a respective plurality of offset attenuation factors responsive to one or more of the plurality of potentiometer control values. A corresponding method is also described.
First claim
Opening claim text (preview).
What is claimed is: 1. A magnetic field sensor, comprising: a plurality of magnetic field sensing elements, each one of the plurality of magnetic field sensing elements having a respective plurality of contacts, wherein the plurality of magnetic field sensing elements is configured to generate a plurality of magnetic field signals, each magnetic field signal responsive to a magnetic field; a sequence switches circuit coupled to the plurality of magnetic field sensing elements, w…
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Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G01R33/0029Primary
Physics · mapped topic
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- What does patent US9448288B2 cover?
- A magnetic field sensor with a plurality of magnetic field sensing elements is presented. The magnetic field sensor includes a sequences switches circuit to sequentially select from among the plurality of magnetic field signals. The magnetic field sensor further includes a memory device to store a plurality of potentiometer control values. Also included is a variable potentiometer to attenuate …
- Who is the assignee on this patent?
- Allegro Microsystems Llc
- What technology area does this patent fall under?
- Primary CPC classification G01R33/0029. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Sep 20 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).