Patents by Inventor Juan Manuel Cesaretti

Juan Manuel Cesaretti has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • ELECTRONIC CIRCUIT FOR COMPENSATING A SENSITIVITY DRIFT OF A HALL EFFECT ELEMENT DUE TO STRESS
    Publication number: 20170261567
    Abstract: The present disclosure is directed to an electronic circuit having a Hall effect element and a resistor bridge, all disposed over a common semiconductor substrate. The resistor bridge includes a first set of resistive elements having a first vertical epitaxial resistor and a first lateral epitaxial resistor coupled in series, and a second set of resistive elements having a second vertical epitaxial resistor and a second lateral epitaxial resistor coupled in series. The first set of resistive elements and the second set of resistive elements can be coupled in parallel. The resistor bridge can be configured to sense a stress value of the Hall effect element.
    Type: Application
    Filed: March 10, 2016
    Publication date: September 14, 2017
    Applicant: Allegro Microsystems, LLC
    Inventor: Juan Manuel Cesaretti
  • Circuits and methods for self-calibrating or self-testing a magnetic field sensor using phase discrimination
    Patent number: 9645220
    Abstract: A magnetic field sensor has a reference magnetic field channel and an external magnetic field channel. The magnetic field sensor uses phase discrimination to isolate a reference-magnetic-field signal component from an external magnetic field signal component in the two channels.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: May 9, 2017
    Assignee: Allegro MicroSystems, LLC
    Inventors: Juan Manuel Cesaretti, Octavio Alpago, Alejandro G. Milesi, Franco Noel Martin Pirchio, Hernan D. Romero, Bruno Luis Uberti
  • Electronic circuit for driving a hall effect element with a current compensated for substrate stress
    Patent number: 9638764
    Abstract: An electronic circuit can be disposed upon a semiconductor substrate. An epitaxial layer can be disposed over the semiconductor substrate. The electronic circuit can include a Hall effect element, at least a portion of the Hall effect element disposed in the epitaxial layer. The electronic circuit can further include a current generator configured to generate a drive current that passes through the Hall effect element. The current generator can include a resistor disposed in the epitaxial layer and having characteristics such that a resistance of the resistor can vary with a stress of the semiconductor substrate, resulting in changes of the drive current, to compensate for variations in the sensitivity of the Hall effect element with the stress of the substrate.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: May 2, 2017
    Assignee: Allegro Microsystems, LLC
    Inventors: Juan Manuel Cesaretti, Aaron Cook
  • Circuits and Methods for Removing a Gain Offset in a Magnetic Field Sensor
    Publication number: 20170030979
    Abstract: A magnetic field sensor and a method include a modulator coupled in a feedback arrangement and operable to modulate a calibration feedback signal with a modulator clock signal having a selected frequency and a selected relative phase operable to remove a gain error in the magnetic field sensor and in the method.
    Type: Application
    Filed: July 29, 2015
    Publication date: February 2, 2017
    Applicant: ALLEGRO MICROSYSTEMS, LLC
    Inventor: Juan Manuel Cesaretti
  • Circuits and methods for removing a gain offset in a magnetic field sensor
    Patent number: 9551762
    Abstract: A magnetic field sensor and a method include a modulator coupled in a feedback arrangement and operable to modulate a calibration feedback signal with a modulator clock signal having a selected frequency and a selected relative phase operable to remove a gain error in the magnetic field sensor and in the method.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: January 24, 2017
    Assignee: Allegro MicroSystems, LLC
    Inventor: Juan Manuel Cesaretti
  • Electronic Circuit For Driving A Hall Effect Element With A Current Compensated For Substrate Stress
    Publication number: 20160299199
    Abstract: An electronic circuit can be disposed upon a semiconductor substrate. An epitaxial layer can be disposed over the semiconductor substrate. The electronic circuit can include a Hall effect element, at least a portion of the Hall effect element disposed in the epitaxial layer. The electronic circuit can further include a current generator configured to generate a drive current that passes through the Hall effect element. The current generator can include a resistor disposed in the epitaxial layer and having characteristics such that a resistance of the resistor can vary with a stress of the semiconductor substrate, resulting in changes of the drive current, to compensate for variations in the sensitivity of the Hall effect element with the stress of the substrate.
    Type: Application
    Filed: April 8, 2015
    Publication date: October 13, 2016
    Applicant: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Juan Manuel Cesaretti, Aaron Cook
  • Circuits and methods using adjustable feedback for self-calibrating or self-testing a magnetic field sensor with an adjustable time constant
    Patent number: 9201122
    Abstract: A magnetic field sensor includes a reference-field-sensing circuit channel that allows a self-test or a self-calibration of the circuitry of the magnetic field sensor. The self-test or the self calibration can have at least two different bandwidths that provide a respective at least two different rates of self-test or self-calibration.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: December 1, 2015
    Assignee: Allegro Microsystems, LLC
    Inventors: Juan Manuel Cesaretti, Hernan D. Romero
  • Circuits and Methods for Self-Calibrating or Self-Testing a Magnetic Field Sensor Using Phase Discrimination
    Publication number: 20150301149
    Abstract: A magnetic field sensor has a reference magnetic field channel and an external magnetic field channel. The magnetic field sensor uses phase discrimination to isolate a reference-magnetic-field signal component from an external magnetic field signal component in the two channels.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 22, 2015
    Applicant: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Juan Manuel Cesaretti, Octavio Alpago, Alejandro G. Milesi, Franco Noel Martin Pirchio, Hernan D. Romero, Bruno Luis Uberti
  • Electronic Comparison Circuit To Identify At Least Three Conditions of an Input Signal
    Publication number: 20150268312
    Abstract: An electronic comparison circuit can identify at least three conditions of an input signal received by the electronic comparison circuit. A first one of the at least three conditions occurs when a value of the input signal is less than a first threshold value, a second one of the at least three conditions occurs when a value of the input signal is greater than the first threshold value and less than a second threshold value, and a third one of the at least three conditions occurs when a value of the input signal is greater than the second threshold value. A magnetic field sensor can use the electronic comparison circuit.
    Type: Application
    Filed: March 18, 2015
    Publication date: September 24, 2015
    Applicant: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Manuel Rivas, Juan Manuel Cesaretti, Pablo Javier Bolsinger
  • Circuits and methods for generating a diagnostic mode of operation in a magnetic field sensor
    Patent number: 8692546
    Abstract: A magnetic field sensor includes a diagnostic circuit that allows a self-test of most of, or all of, the circuitry of the magnetic field sensor, including a self-test of a magnetic field sensing element used within the magnetic field sensor. The magnetic field sensor can generate a diagnostic magnetic field to which the magnetic field sensor is responsive.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: April 8, 2014
    Assignee: Allegro Microsystems, LLC
    Inventors: Juan Manuel Cesaretti, Gerardo A. Monreal, William P. Taylor, Michael C. Doogue
  • Circuits and methods for self-calibrating or self-testing a magnetic field sensor
    Patent number: 8680846
    Abstract: A magnetic field sensor includes a reference-field-sensing circuit channel that allows a calibration or a self-test of the circuitry of the magnetic field sensor. The magnetic field sensor can generate a reference magnetic field to which the magnetic field sensor is responsive.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: March 25, 2014
    Assignee: Allegro Microsystems, LLC
    Inventors: Juan Manuel Cesaretti, Gerardo Monreal
  • Circuits and Methods for Generating a Diagnostic Mode of Operation in a Magnetic Field Sensor
    Publication number: 20130335066
    Abstract: A magnetic field sensor includes a diagnostic circuit that allows a self-test of most of, or all of, the circuitry of the magnetic field sensor, including a self-test of a magnetic field sensing element used within the magnetic field sensor. The magnetic field sensor can generate a diagnostic magnetic field to which the magnetic field sensor is responsive.
    Type: Application
    Filed: August 19, 2013
    Publication date: December 19, 2013
    Applicant: Allegro Microsystems, LLC
    Inventors: Juan Manuel Cesaretti, Gerardo A. Monreal, William P. Taylor, Michael C. Doogue
  • Circuits and methods for generating a diagnostic mode of operation in a magnetic field sensor
    Patent number: 8542010
    Abstract: A magnetic field sensor includes a diagnostic circuit that allows a self-test of most of or all of, the circuitry of the magnetic field sensor, including a self-test of a magnetic field sensing element used within the magnetic field sensor. The magnetic field sensor can generate a diagnostic magnetic field to which the magnetic field sensor is responsive.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: September 24, 2013
    Assignee: Allegro Microsystems, LLC
    Inventors: Juan Manuel Cesaretti, Gerardo Monreal, William P. Taylor, Michael C. Doogue
  • Circuits And Methods Using Adjustable Feedback For Self-Calibrating Or Self-Testing A Magnetic Field Sensor With An Adjustable Time Constant
    Publication number: 20130214774
    Abstract: A magnetic field sensor includes a reference-field-sensing circuit channel that allows a self-test or a self-calibration of the circuitry of the magnetic field sensor. The self-test or the self calibration can have at least two different bandwidths that provide a respective at least two different rates of self-test or self-calibration.
    Type: Application
    Filed: February 16, 2012
    Publication date: August 22, 2013
    Applicant: ALLEGRO MICROSYSTEMS, INC.
    Inventors: Juan Manuel Cesaretti, Hernan D. Romero
  • Circuits and Methods for Self-Calibrating or Self-Testing a Magnetic Field Sensor
    Publication number: 20120274314
    Abstract: A magnetic field sensor includes a reference-field-sensing circuit channel that allows a calibration or a self-test of the circuitry of the magnetic field sensor. The magnetic field sensor can generate a reference magnetic field to which the magnetic field sensor is responsive.
    Type: Application
    Filed: April 27, 2011
    Publication date: November 1, 2012
    Applicant: ALLEGRO MICROSYSTEMS, INC.
    Inventors: Juan Manuel Cesaretti, Gerardo Monreal
  • Circuits and Methods for Generating a Diagnostic Mode of Operation in a Magnetic Field Sensor
    Publication number: 20110018533
    Abstract: A magnetic field sensor includes a diagnostic circuit that allows a self-test of most of or all of, the circuitry of the magnetic field sensor, including a self-test of a magnetic field sensing element used within the magnetic field sensor. The magnetic field sensor can generate a diagnostic magnetic field to which the magnetic field sensor is responsive.
    Type: Application
    Filed: July 21, 2010
    Publication date: January 27, 2011
    Applicant: Allegro Microsystems, Inc.
    Inventors: Juan Manuel Cesaretti, Gerardo Monreal, William P. Taylor, Michael C. Doogue