607 patents
Page 8 of 31
Utility
Reducing voltage non-linearity in a bridge having tunneling magnetoresistance (TMR) elements
13 Dec 22
In one aspect, a magnetic field sensor includes a plurality of tunneling magnetoresistance (TMR) elements that includes a first TMR element, a second TMR element, a third TMR element and a fourth TMR element.
Rémy Lassalle-Balier, Pierre Belliot, Christophe Hoareau, Jean-Michel Daga
Filed: 15 Oct 21
Utility
Auto-calibration for Multi-pole Angle Sensors with Mechanical Modulation
8 Dec 22
A sensor, comprising: a processing circuitry configured to: receive a first signal that is generated by a first magnetic field sensing element, the first signal being generated in response to a magnetic field that is indicative of rotation of a target; identify N local maxima of the first signal, where N is a positive integer, and N>1; identify N local minima of the first signal; generate a first offset adjustment signal and a first gain adjustment signal based on: (i) a first sum of the local maxima of the first signal and (ii) a second sum of the local minima of the first signal; and adjust the first signal based on the first offset adjustment signal and the first gain adjustment signal.
Sergio Nicolás Deligiannis, Nicolás Rigoni
Filed: 27 May 21
Utility
Arrayed Time to Digital Converter
8 Dec 22
Methods and apparatus for an arrayed time to digital converter (TDC) having matched delay line sampling.
Charles Myers, Shunming Sun, Adam Lee
Filed: 2 Jun 22
Utility
Current sensor integrated circuits
6 Dec 22
A current sensor integrated circuit (IC) includes a unitary lead frame having at least one first lead having a terminal end, at least one second lead having a terminal end, and a paddle having a first surface and a second opposing surface.
Shixi Louis Liu, Paul A. David, Shaun D. Milano, Rishikesh Nikam, Alexander Latham, Wade Bussing, Natasha Healey, Georges El Bacha
Filed: 13 Sep 21
Utility
Packaged current sensor integrated circuit
6 Dec 22
A packaged current sensor integrated circuit includes a primary conductor having an input portion and an output portion configured to carry a current to be measured by a magnetic sensing element supported by a semiconductor die adjacent to the primary conductor.
Simon E. Rock, Alexander Latham, Robert A. Briano, Shixi Louis Liu
Filed: 23 Aug 21
Utility
Synchronous Converter for Use with Reverse Current Protection Diode
1 Dec 22
A converter to convert an input voltage into a regulated output current for supplying a load includes a reverse current protection diode having an anode coupled to the input voltage and a cathode, an energy storage element coupled to the cathode of the reverse current protection diode, a high side transistor coupled to the energy storage element and responsive to a high side control signal, and a low side transistor coupled to the energy storage element and responsive to a low side control signal.
Vishal Ghorband, George P. Humphrey
Filed: 28 May 21
Utility
Current sensor having a flux concentrator for redirecting a magnetic field through two magnetic field sensing elements
29 Nov 22
A method can use a current sensor that can include a magnetic flux concentrator along with first and second magnetic field sensing elements disposed proximate to the magnetic flux concentrator, wherein the magnetic flux concentrator is operable to influence a direction of first and second magnetic fields at the first and second magnetic field sensing elements, respectively, the first and second magnetic fields resulting from an electrical current passing through a conductor, the first and second magnetic field sensing elements operable to generate first and second signals, respectively, in response to the first and second magnetic fields, respectively, wherein the current sensor can also include a differencing circuit operable to subtract the first and second signals to generate a difference signal related to the electrical current.
Yannick Vuillermet, Cédric Gillet, Loïc André Messier, Xavier Blanc
Filed: 30 Jun 21
Utility
Dual circuit digital isolator
29 Nov 22
An apparatus, comprising: a substrate; a coupling capacitor that is formed over the substrate; and an isolator that is formed between the substrate and the coupling capacitor, the isolator including: (a) an MP-well layer, (b) a first well layer, (c) an epi tub layer that is nested in the MP-well layer and the first well layer, and (d) a second well layer that is nested in the epi tub layer.
Sundar Chetlur, Maxim Klebanov, Cory Voisine, Kenneth Snowdon, Hsuan-Jung Wu
Filed: 9 Oct 20
Utility
Stray field immune coil-activated sensor
8 Nov 22
A magnetic field sensor includes: a substrate; a transmission coil formed on the substrate, the transmission coil being configured to generate a direct magnetic field; a sensing bridge that is formed on the substrate, the sensing bridge being configured to detect the direct magnetic field and a reflected magnetic field that is generated by a target, the reflected magnetic field being generated in response to eddy currents that are induced in the target by the direct magnetic field; a processing circuitry being configured to generate an output signal that is indicative of a position of the target, the output signal being generated by normalizing a first signal with respect to a second signal, the first signal being generated at least in part by using the sensing bridge, and the second signal being generated at least in part by using the sensing bridge, wherein the second signal is based on the detected direct magnetic field.
Hernán D. Romero
Filed: 26 Feb 21
Utility
Coil Actuated Sensor with Sensitivity Detection
27 Oct 22
A magnetic field sensor includes at least one coil responsive to an AC coil drive signal; at least one magnetic field sensing element responsive to a sensing element drive signal and configured to detect a directly coupled magnetic field generated by the at least one coil and to generate a magnetic field signal in response to the directly coupled magnetic field; a processor responsive to the magnetic field signal to compute a sensitivity value associated with detection of the directly coupled magnetic field and substantially independent of a reflected magnetic field reflected by a conductive target disposed proximate to the at least one magnetic field sensing element; and an output signal generator configured to generate an output signal of the magnetic field sensor indicative of the reflected magnetic field.
Alexander Latham, Claude Fermon, Jason Boudreau, Myriam Pannetier-Lecoeur, Bryan Cadugan, Hernán D. Romero
Filed: 1 Jul 22
Utility
Electronic Circuit Having Vertical Hall Elements Arranged on a Substrate to Reduce an Orthogonality Error
27 Oct 22
An electronic circuit can have a first plurality of vertical Hall elements and a second plurality of vertical Hall elements all disposed on a substrate having a plurality of crystal unit cells, wherein the first plurality of vertical Hall elements have longitudinal axes disposed within five degrees of parallel to an edge of the crystal unit cells, and wherein the second plurality of vertical Hall elements have longitudinal axes disposed between eighty-five and ninety-five degrees relative to the longitudinal axes of the first plurality of vertical Hall elements.
Hernán D. Romero, Gerardo A. Monreal
Filed: 23 Apr 21
Utility
Ultra-low Noise Capacitively-coupled Auto-zeroed and Chopped Amplifier with Sensor Offset Compensation
27 Oct 22
In some embodiments, a circuit includes: a first chopping circuit configured to receive an input signal and generate a modulated signal responsive to the input signal; first and second input capacitors selectively coupled to receive a modulated signal or a common-mode voltage; an amplifier having an input and an output, the input coupled to the first and second input capacitors; an auto-zeroing circuit comprising one or more auto-zeroing feedback capacitors selectively coupled between the amplifier input and output; a gain selection circuit comprising one or more gain selection feedback capacitors coupled to the amplifier input and selectively coupled to the amplifier output or the common-mode voltage; an offset compensation circuit comprising one or more offset capacitors coupled to the amplifier input and selectively coupled to a reference voltage or the common-mode voltage; and a second chopping circuit configured to generate a demodulated signal responsive to the amplifier output.
Karel Znojemsky, Richard Stary
Filed: 21 Apr 21
Utility
Non-orthogonality adjustment based on a duty cycle
25 Oct 22
According to some embodiments, a method implemented in electronic circuitry includes: receiving a first signal having a sinusoidal waveform; receiving a second signal having a sinusoidal waveform; generating a composite signal responsive to the first and second signals; determining an orthogonality adjustment coefficient based on a duty cycle of the composite signal; and applying the orthogonality adjustment coefficient to generate an adjusted second signal that is substantially orthogonal to the first signal.
Sergio Nicolás Deligiannis, Nicolás Rigoni
Filed: 4 Dec 20
Utility
System and Related Techniques That Provide an Angle Sensor for Sensing an Angle of Rotation of a Ferromagnetic Screw
20 Oct 22
A system and a method can use a magnetic field sensor to measure rotation angles of a ferromagnetic object in the form of a screw having screw threads.
Aurelian Diaconu, Paul A. David
Filed: 16 Apr 21
Utility
Temperature Sensing of an Array from Temperature Dependent Properties of a PN Junction
20 Oct 22
Methods and apparatus for extracting temperature information for an array from a signal through first and second contacts based on temperature dependent properties of the a PN junction.
Joseph James Judkins, III, Bryan Cadugan
Filed: 14 Apr 21
Utility
Multi-domain Detector Based on Artificial Neural Network
20 Oct 22
A sensor, comprising: a magnetic field sensing module that is configured to generate a plurality of signals, each signal indicating a magnetic flux density of a different component of a magnetic field that is produced by a magnetic field source; a processing circuitry that is configured to: receive the plurality of signals from the magnetic field sensing module; evaluate a neural network based on the plurality of signals to obtain a plurality of probabilities, each of the plurality of probabilities indicating a likelihood of the magnetic field source being positioned in a different one of a plurality of positional domains; generate an output signal based on the plurality of probabilities, the output signal encoding an identifier of a current positional domain of the magnetic field source.
Loïc André Messier, Christophe Lutz
Filed: 20 Apr 21
Utility
Temperature Sensing of a Photodetector Array
20 Oct 22
Methods and apparatus for temperature sensing in a detector system.
Bryan Cadugan
Filed: 14 Apr 21
Utility
Determining a Temperature of a Pixel Array by Measuring Voltage of a Pixel
20 Oct 22
Methods and apparatus for determining the temperature of a pixel array.
Joseph James Judkins, III, Bryan Cadugan
Filed: 14 Apr 21
Utility
System and related techniques that provide an angle sensor for sensing an angle of rotation of a ferromagnetic screw
18 Oct 22
A system and a method can use a magnetic field sensor to measure rotation angles of a ferromagnetic object in the form of a screw having screw threads.
Aurelian Diaconu, Paul A. David
Filed: 16 Apr 21
Utility
Low acoustic noise open loop motor startup
18 Oct 22
Methods and apparatus for open loop startup of a three-phase motor that reduces acoustic noise.
Masahira Kurihara, Dmytro Sakharov, Anton Babushkin
Filed: 9 Jul 21