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公开(公告)号：US11215681B2
公开(公告)日：2022-01-04
申请号：US16507544
申请日：2019-07-10
摘要： A system includes a ring magnet having magnetic segments and configured to rotate about an axis of rotation, wherein adjacent segments have different magnetic polarities, The system can further include a substrate positioned so that a top surface of the substrate is substantially parallel to the axis of rotation and a center plane passing through the ring magnet and perpendicular to the axis of rotation of the ring magnet intersects the top surface at an intersection line. The system can further include four magnetic field sensing elements supported by the substrate and electrically coupled to form a first bridge circuit, wherein two of the four magnetic field sensing elements are positioned on one side of the intersection line and the other two of the four magnetic field sensing elements are positioned on the other side of the intersection line.
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公开(公告)号：US20210011097A1
公开(公告)日：2021-01-14
申请号：US16507544
申请日：2019-07-10
摘要： A system includes a ring magnet having magnetic segments and configured to rotate about an axis of rotation, wherein adjacent segments have different magnetic polarities, The system can further include a substrate positioned so that a top surface of the substrate is substantially parallel to the axis of rotation and a center plane passing through the ring magnet and perpendicular to the axis of rotation of the ring magnet intersects the top surface at an intersection line. The system can further include four magnetic field sensing elements supported by the substrate and electrically coupled to form a first bridge circuit, wherein two of the four magnetic field sensing elements are positioned on one side of the intersection line and the other two of the four magnetic field sensing elements are positioned on the other side of the intersection line.
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公开(公告)号：US10605874B2
公开(公告)日：2020-03-31
申请号：US16055644
申请日：2018-08-06
摘要： A magnetic field sensor includes a substrate having a surface and a plurality of magnetoresistance elements supported by the surface of the substrate. Each magnetoresistance element has a respective width parallel to the surface, and each width may be a smallest dimension parallel to the surface. A first width of a first magnetoresistance element of the plurality of magnetoresistance elements may be different from a second width of a second magnetoresistance element of the plurality of magnetoresistance elements. A processing circuit may be coupled to the plurality of magnetoresistance elements to receive a signal representing a detected magnetic field from at least one of the magnetoresistance elements.
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公开(公告)号：US09880026B1
公开(公告)日：2018-01-30
申请号：US15210211
申请日：2016-07-14
发明人： Jeffrey Eagen , Paul A. David , William P. Taylor
CPC分类号： G01D5/165 , G01D5/145 , G01R33/09 , G01R33/093
摘要： A magnetic field sensor for detecting motion of an object includes a magnet configured to generate a magnetic field and having a first surface adjacent to the object and a second surface distal from the object. The first surface of the magnet has a centerline axis substantially parallel to and disposed on the first surface, and the centerline axis is diagonal with respect to a motion axis substantially parallel to and disposed on the first surface and parallel to which the object moves. The magnetic field sensor also includes a semiconductor substrate disposed between the magnet and the object, the semiconductor substrate supporting a plurality of spaced magnetoresistance elements disposed along a sensing element axis substantially parallel to the centerline axis of the magnet and configured to generate a respective plurality of magnetic field signals in response to the motion of the object with respect to magnetic field.
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公开(公告)号：US20170261546A1
公开(公告)日：2017-09-14
申请号：US15068775
申请日：2016-03-14
发明人： Jeffrey Eagen , Maxim Klebanov , William P. Taylor
CPC分类号： G01R31/2872 , G01D3/08 , G01D5/145 , G01D5/24428 , G01L1/12 , G01R33/0029 , G01R33/09
摘要： An integrated circuit includes at least one first magnetic field sensing element including at least one first magnetoresistance element configured to provide an output signal of the integrated circuit in response to a detected magnetic field. The integrated circuit also includes at least one second magnetic field sensing element including at least one second magnetoresistance element configured to have a characteristic indicative of a stress condition. A method for detecting a stress condition in an integrated circuit is also provided.
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公开(公告)号：US11169221B2
公开(公告)日：2021-11-09
申请号：US16801493
申请日：2020-02-26
发明人： Jeffrey Eagen
IPC分类号： G01R33/00 , G01R33/025 , G01R33/09 , G01R33/07
摘要： 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.
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公开(公告)号：US20210263114A1
公开(公告)日：2021-08-26
申请号：US16801493
申请日：2020-02-26
发明人： Jeffrey Eagen
IPC分类号： G01R33/00 , G01R33/025
摘要： 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.
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公开(公告)号：US11002807B2
公开(公告)日：2021-05-11
申请号：US16806028
申请日：2020-03-02
发明人： Paolo Campiglio , Jeffrey Eagen
摘要： A magnetoresistance element deposited upon a substrate includes a first stack portion having opposing first and second surfaces and including a first plurality of layers. The first stack portion has a first substantially linear response corresponding to an applied magnetic field over a first magnetic field strength range. The magnetoresistance element also includes a second stack portion having opposing first and second surfaces and including a second plurality of layers. The first surface of the second stack portion is disposed over the second surface of the first stack portion and the second stack portion has a second substantially linear response that is different than the first substantially linear response. The second substantially linear response corresponds to the applied magnetic field over a second magnetic field strength range.
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公开(公告)号：US10921373B2
公开(公告)日：2021-02-16
申请号：US15825879
申请日：2017-11-29
IPC分类号： G01R31/319 , G01R33/09 , G01D5/14 , G01D18/00
摘要： A method of determining an error condition in a magnetic field sensor can include receiving a first bridge signal, the first bridge signal generated by a first full bridge circuit. The method can also include receiving a second bridge signal, the second bridge signal generated by a second full bridge circuit. The method can also include determining a bridge separation from the first bridge signal and the second bridge signal. The method can also include comparing a function of the bridge separation to a threshold value. The method can also include generating an error signal indicative of the error condition or not indicative of the error condition in response to the comparing.
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公开(公告)号：US20200041584A1
公开(公告)日：2020-02-06
申请号：US16055644
申请日：2018-08-06
摘要： A magnetic field sensor includes a substrate having a surface and a plurality of magnetoresistance elements supported by the surface of the substrate. Each magnetoresistance element has a respective width parallel to the surface, and each width may be a smallest dimension parallel to the surface. A first width of a first magnetoresistance element of the plurality of magnetoresistance elements may be different from a second width of a second magnetoresistance element of the plurality of magnetoresistance elements. A processing circuit may be coupled to the plurality of magnetoresistance elements to receive a signal representing a detected magnetic field from at least one of the magnetoresistance elements.
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