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Analog magnetic sensor device for measuring the orientation of an external magnetic field
US12517197B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12517197-B2 |
| Application number | US-202418415991-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 18, 2024 |
| Priority date | Jan 18, 2024 |
| Publication date | Jan 6, 2026 |
| Grant date | Jan 6, 2026 |
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Abstract
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A two-dimensional analog angular magnetic sensor device for measuring an orientation of an external magnetic field, comprising at least a magnetic sensor, comprising a plurality of tunnel magnetoresistance (TMR) elements arranged in a full-bridge configuration and configured to provide a sine output voltage: VSIN=A·sin θ·Vdd, or configured to provide a cosine output voltage VCOS=A·cos θ·Vdd, wherein A is parameter depending on the TMR ratio of the TMR element and Vdd is a bias voltage inputted to the magnetic sensor. The magnetic sensor device further comprises an analog circuit configured to generates a circuit output voltage and electrically connected to the magnetic sensor such as that the magnetic sensor device generates a device output voltage that follows one of: a tangent output voltage VTAN:Vout=K·Vdd·VTAN=K·Vdd·tan θ, where K is a constant; or a cotangent output voltage (VCOTAN):Vout=K·Vdd·VCOTAN=K·Vdd·cotanθ.
First claim
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What is claimed is: 1 . A two-dimensional analog angular magnetic sensor device for measuring an orientation of an external magnetic field, comprising: at least a magnetic sensor, comprising a plurality of tunnel magnetoresistance (TMR) elements arranged in a full-bridge configuration and configured to provide a sine output voltage V SIN : V SIN = A · sin θ · V dd , or configured to provide a cosine output voltage V COS : V cos = A · cos θ · V dd , wherein A is parameter depending on the TMR ratio of the TMR element and V dd is a bias voltage inputted to the magnetic sensor; wherein the magnetic sensor device further comprises an analog circuit configured to generates a circuit output voltage and electrically connected to the magnetic sensor such as that the magnetic sensor device generates a device output voltage V out that follows one of: a tangent output voltage V TAN : V out = K · V dd · V TAN = K · V dd · tan θ , a cotangent output voltage V COTAN : V out = K · V dd · V COTAN = K · V dd · cotan θ . 2 . A linear sensor device comprising a magnetic sensor device comprising: at least a magnetic sensor, comprising a plurality of TMR elements arranged in a full-bridge configuration and configured to provide a sine output voltage V SIN : V SIN = A · sin θ · V dd , configured to provide a cosine output voltage V COS : V COS = A · cos θ · V dd , wherein A is parameter depending on the TMR ratio of the TMR element and V dd is a bias voltage inputted to the magnetic sensor; wherein the magnetic sensor device further comprises an analog circuit configured to generates a circuit output voltage and electrically connected to the magnetic sensor such as that the magnetic sensor device generates a device output voltage V out that follows one of: a tangent output voltage V TAN : V out = K · V dd · V TAN = K · V dd · tan θ , a cotangent output voltage V COTAN : V out = K · V dd · V COTAN = K · V dd · cotan θ ; wherein the linear sensor device further comprises a
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Classifications
Magnetoresistive devices · CPC title
using feed-back or modulation techniques · CPC title
- G01R33/0029Primary
Treating the measured signals, e.g. removing offset or noise · CPC title
Constructional adaptation of the sensor to specific applications · CPC title
comprising tunnel junctions, e.g. tunnel magnetoresistance sensors · CPC title
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- What does patent US12517197B2 cover?
- A two-dimensional analog angular magnetic sensor device for measuring an orientation of an external magnetic field, comprising at least a magnetic sensor, comprising a plurality of tunnel magnetoresistance (TMR) elements arranged in a full-bridge configuration and configured to provide a sine output voltage: VSIN=A·sin θ·Vdd, or configured to provide a cosine output voltage VCOS=A·cos θ·Vdd, wh…
- 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 Jan 06 2026 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 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).