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Class 324/251 - Hall plate magnetometers


Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter wherein the apparatus to sense a magnetic
No. of patents: 346
Last issue date: 05/01/2012


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NumberTitleIssue Date
8169215Magnetic sensor and method of manufacturing thereof
The present invention relates to a magnetic sensor with which magnetic characteristics are made extremely stable by consideration of an area of contact of a base layer of a magnetic substance and a semiconductor substrate. On a semiconductor substrate (111) a...
05/01/2012
8159219MEMS 2D and 3D magnetic field sensors and associated manufacturing method
The disclosure provides Hall effect device configurations capable of measuring magnetic fields in two dimensions (2D) and three dimensions (3D) along with associated microelectromechanical system (MEMS) manufacturing methods. The present invention includes various g...
04/17/2012
8154281Sensor system wherein spinning phases of the spinning current hall sensor are lengthened in residual offset adjustment
A system including a spinning current Hall sensor and a chopping circuit. The spinning current Hall sensor is configured to provide input signals and the chopping circuit is configured to receive the input signals. Spinning phases of the spinning current Hall sensor...
04/10/2012
8093891Vertical Hall Effect sensor
A complimentary metal oxide semiconductor (CMOS) sensor system in one embodiment includes a doped well extending along a first axis of a doped substrate, a first electrical contact positioned within the doped well, a second electrical contact positioned within the d...
01/10/2012
8093890Hall-effect switch circuit allowing low voltage operation
A hall-effect switching system comprises a hall-effect switch, a voltage comparison module, and a resistance bypass module. The voltage comparison module compares a supply voltage and a reference voltage. The resistance bypass module selectively adjusts a voltage ou...
01/10/2012
8089276Magnetic field sensor assembly
A magnetic field sensor assembly has at least one magnetic field sensor integrated into a semiconductor chip and has at least one magnetic field source. The semiconductor chip and the at least one magnetic field source are arranged in an encapsulation material in a ...
01/03/2012
8080993Sensor module with mold encapsulation for applying a bias magnetic field
A method of manufacturing a sensor module includes providing a substrate comprising a magnetically sensitive sensor element. The sensor element and the substrate are encapsulated with at least one mold material that is configured to apply a bias magnetic field to th...
12/20/2011
8054071Two-terminal linear sensor
A magnetic field sensor includes a linear magnetic field sensor to produce a voltage proportional to a sensed magnetic field and an interface having only two terminals for external connections. The two terminals of the interface include a power supply terminal and a...
11/08/2011
8030918Magnetic field sensor with automatic sensitivity adjustment
Magnetic field sensors have a magnetic field sensing element and also a feedback circuit to provide a gain-adjustment signal to affect a sensitivity associated with the magnetic field sensing element. In some arrangements, the feedback circuit can include piezoresis...
10/04/2011
8026718Magnetic sensor, hall element, hall IC, magnetoresistive effect element, method of fabricating hall element, and method of fabricating magnetoresistive effect element
An aspect of the present invention provides a magnetic sensor which is operated better at a high temperature range not lower than 300° C. compared with a conventional magnetic sensor. A operating layer having a heterojunction interface is formed by laminating a fir...
09/27/2011
7994782Magnetic detection circuit
A magnetic detection element is employed. An output voltage from the magnetic detection element is amplified by an amplifying circuit. A switch circuit is connected between the magnetic detection element and the amplifying circuit. The switch circuit reverses the po...
08/09/2011
7965076Magnetic field orientation sensor
A magnetic angle sensor 100 comprises a bulk substrate; a circular well 101 provided upon the bulk substrate; an even numbered plurality of electrodes 102a-102x spaced at regular intervals in a ring formation over the circul...
06/21/2011
7952350Circuit that provides output voltages in a homogenous magnetic field
A circuit including Hall plates and an amplifier. The Hall plates are configured to provide Hall voltages in a homogenous magnetic field such that a first Hall plate has a first positive voltage and a first negative voltage and a second Hall plate has a second posit...
05/31/2011
7923997Magneto-sensitive integrated circuit
A magneto-sensitive integrated circuit which amplifies a magneto-sensitive output voltage of a Hall element by an amplifier to generate an amplified voltage, converts an output voltage of the amplifier into a digital signal by an A/D converter; and generates a refer...
04/12/2011
7923996Magnetic field sensor with automatic sensitivity adjustment
Magnetic field sensors have a magnetic field sensing element and also a feedback circuit to provide a gain-adjustment signal to affect a sensitivity associated with the magnetic field sensing element. In some arrangements, the feedback circuit can include piezoresis...
04/12/2011
7906961Magnetic field sensor arrangement and method for non-contact measurement of a magnetic field
A magnetic field sensor arrangement (4) comprises a stacked arrangement (1) with a first magnetic field sensor body (20) and a second magnetic field sensor body (40). The first magnetic field sensor body (20) has a first main surfa...
03/15/2011
7902820Method and apparatus for detecting spatially varying and time-dependent magnetic fields
Certain inventive aspects provide local field imaging with high spatial, time and field resolution by using an array of Hall effect sensors that can be individually read out. The design combines semiconductor Hall sensors and switches that isolate the addressed Hall...
03/08/2011
7855554Semiconductor device, magnetic sensor, and physical quantity sensor
A semiconductor device includes: a detection Hall element for detecting a magnetic field; a temperature monitor Hall element; and a calculation circuit. The detection Hall element has a characteristic, which is almost a same as the temperature monitor Hall element. ...
12/21/2010
7843193System for testing magnetic sensitivity of Hall-effect switch
A system and method for determining the magnetic sensitivity of a Hall-effect switch through the use of a variable powered DC electromagnet having a permanent magnet attached to it. In use the electromagnet is placed in contact with a Hall-effect switch component an...
11/30/2010
7825657Magnetic field sensor and method for the operation thereof
A magnetic field sensor comprising a sensor arrangement (H), which is supplied by a supply device (IH) and generates a sensor signal. An evaluation device (ADC, R) to which the sensor signal is fed and which outputs a first output signal (AI). A feedback device (RV)...
11/02/2010
7782050Hall effect device and method
A semiconductor device including a Hall effect sensor and related method. The Hall effect device includes a substrate having a first conductivity type and an epitaxial layer having a second conductivity type defining a Hall effect portion. A conductive buried layer ...
08/24/2010
7701207Sensor, in particular a magnetic field sensor, with interference compensation and method for interference compensation of a sensor
A sensor, in particular a Hall sensor, comprising a sensor element (1; 10) which outputs a sensor signal (SS) containing an interference signal (STS). An evaluation device (6; 20) is connected to the sensor element and contains a subtractor (2; 21
04/20/2010
7701208Magnetic sensor circuit and portable terminal provided with such magnetic sensor circuit
A Hall element outputs a Hall voltage generated at a first terminal pair or a second terminal pair to first and second output terminals by switching the voltage in a first status and a second status. Based on the voltages of the first and the second output terminals...
04/20/2010
7511484Magnetic sensor and method for detecting magnetic field
A magnetic sensor includes: a substrate; a semiconductor region; a magnetic field detection portion; a pair of first electrodes; and two pairs of second electrodes. One pair of second electrodes includes first and second terminals, and the other pair includes third ...
03/31/2009
7459906Semiconductor magnetic sensor
To detect a magnetic flux density of a magnetic field applied from an outside, a semiconductor magnetic sensor of the present invention includes: a transistor (MP101) formed on a side of one, side of a hall element (100), for driving the hall element (...
12/02/2008
7440861Concept of compensating for piezo influences on integrated circuitry
The inventive circuitry on a semiconductor chip includes a first functional element having a first electronic functional-element parameter that exhibits a dependence relating to the mechanical stress present in the semiconductor circuit chip in accordance with a fir...
10/21/2008
7439734Rotary encoder and method for its operation
A rotary encoder includes a first group of components and a second group of components. The first group of components has a pulse wire, a detector, and a circuit configuration. The second group of components has a magnet and a code element. Upon approach of the magn...
10/21/2008
7437260Concept of compensating for piezo influences on integrated circuitry
A semiconductor chip includes a first functional element having a first electronic functional-element parameter exhibiting a dependence relating to the mechanical stress present in the semiconductor circuit chip, and being configured to provide a first output signal...
10/14/2008
7400132Current sensor and method of manufacturing the same
A current sensor includes a semiconductor substrate, a ring shaped magnetic core having a center opening and a gap and provided to a surface of the substrate, and a Hall element provided to the surface and placed in the gap of the magnetic core such that a control c...
07/15/2008
7372260Magnetic sensor, and method of compensating temperature-dependent characteristic of magnetic sensor
A magnetic sensor 10 includes GMR elements 11-18, and heating coils 21-24 serving as heat generating elements. The elements 11-14 and 15-18 are bridge-interconnected to constitute X-axis and Y-axis senso...
05/13/2008
7355388Rotation detecting device using magnetic sensor
A rotation detecting device is provided that detects the rotation of a rotating object by means of a biasing permanent magnet and multiple sensor chips. The sensor chips are disposed on front and back sides of a mounting chip along the rotation direction of the rota...
04/08/2008
7353712Integrated circuitry and method for manufacturing the same
The integrated circuitry on a semiconductor substrate includes an integrated circuit arranged in a circuit area of the semiconductor substrate and a stress-sensitive structure on the semiconductor substrate for detecting a mechanical stress component in the semicond...
04/08/2008
7355822Superparamagnetic field sensing device
A ferromagnetic thin-film based magnetic field sensor having an electrically insulative intermediate layer with two major surfaces on opposite sides thereof with an initial film of an anisotropic ferromagnetic material on one of those intermediate layer major surfac...
04/08/2008
7352172Relative position detecting apparatus using magneto-resistors
The device according to the present invention comprises at least one magnetic field generating element, at least one magneto-resistor and at least one resistance-to-current converter generating a current signal dependent on the resistance value of said at least one ...
04/01/2008
7345476Method and apparatus for measuring an entity of a magnetic field by using a hall plate, an excitation signal and a detection signal
Method and apparatus for measuring an entity of a magnetic field using a Hall sensor which is provided with at least one Hall plate which has a group of two pairs of terminals located at a distance from one another, an excitation signal supplied from a source to one...
03/18/2008
7342395Fuel level sensor using rotating angel sensor attached to float on totating arm
A fuel level sensor having a magnetic position sensor connected to an arm for attachment to a float, wherein the magnetic position sensor comprises a stator and a movable part, the stator having two soft magnetic pieces defining an air gab, which contains a magnetor...
03/11/2008
7339245Hall sensor
A Hall sensor on a semiconductor substrate includes a Hall plate in the semiconductor substrate, where the Hall plate includes a first zone having a first conduction type. The semiconductor substrate also include a second zone having a second conduction type. A spac...
03/04/2008
7336068Field device and method for calibrating a field device
The invention relates to a field device and a method for calibrating a field device, having a field device electronics and a sensor unit for process measurements, wherein the field device electronics receives measurement signals of the sensor unit, wherein the field...
02/26/2008
7309904Semiconductor device, magnetic sensor, and magnetic sensor unit
A semiconductor device, comprising a semiconductor chip; a pad electrode; an electrode portion; a wiring portion. An insulating portion is formed from electrically insulating material, covering the surface of the semiconductor chip and sealing the sensor element, wi...
12/18/2007
7307417Rotation detecting device
A rotation detecting device for detecting a rotating object includes a housing having a bearing and an mounting surface, a rotor member having magnetic peripheral portion and a rotary shaft that is supported by the bearing, a biasing permanent magnet for providing m...
12/11/2007
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