Patents by Inventor Marwan Ashkar

Marwan Ashkar 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).

  • Apparatus and method for extending analog front end sense range of a high-Q MEMS sensor
    Patent number: 9835647
    Abstract: Apparatus and methods for interfacing with a micro-electromechanical system (MEMS) sensor are provided. In an example, an apparatus can interface circuit including an integrator circuit, a sample switch circuit, a saturation detector and a controller. The saturation detector can be configured to receive a signal indicative of an integration of charge of the sensor, to compare the signal indicative of the integration of charge to an integrator saturation threshold and to modulate a divide parameter using the comparison of the signal indicative of the integration of charge and the integrator saturation threshold. The controller can be configured to receive a clock signal and to control the sample switch circuit based on a phase of the clock signal and the divide parameter.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: December 5, 2017
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Ion Opris, Justin Seng, Shanthi Pavan, Marwan Ashkar, Michelle Lee
  • Temperature and power supply calibration
    Patent number: 9759564
    Abstract: This document discusses, among other things, a temperature and power supply calibration system configured to compensate for temperature and supply voltage variation in MEMS or other circuits using representations of positive and negative supply voltages and first and second base-emitter voltages, wherein the second base-emitter voltage is a scaled representation of the first base-emitter voltage.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: September 12, 2017
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Shungneng Lee, Justin Seng, Marwan Ashkar, Ion Opris
  • APPARATUS AND METHOD FOR EXTENDING ANALOG FRONT END SENSE RANGE OF A HIGH-Q MEMS SENSOR
    Publication number: 20150268284
    Abstract: Apparatus and methods for interfacing with a micro-electromechanical system (MEMS) sensor are provided. In an example, an apparatus can interface circuit including an integrator circuit, a sample switch circuit, a saturation detector and a controller. The saturation detector can be configured to receive a signal indicative of an integration of charge of the sensor, to compare the signal indicative of the integration of charge to an integrator saturation threshold and to modulate a divide parameter using the comparison of the signal indicative of the integration of charge and the integrator saturation threshold. The controller can be configured to receive a clock signal and to control the sample switch circuit based on a phase of the clock signal and the divide parameter.
    Type: Application
    Filed: March 18, 2015
    Publication date: September 24, 2015
    Inventors: Ion Opris, Justin Seng, Shanthi Pavan, Marwan Ashkar, Michelle Lee
  • TEMPERATURE AND POWER SUPPLY CALIBRATION
    Publication number: 20140269813
    Abstract: This document discusses, among other things, a temperature and power supply calibration system configured to compensate for temperature and supply voltage variation in MEMS or other circuits using representations of positive and negative supply voltages and first and second base-emitter voltages, wherein the second base-emitter voltage is a scaled representation of the first base-emitter voltage.
    Type: Application
    Filed: March 18, 2014
    Publication date: September 18, 2014
    Inventors: Shungneng Lee, Justin Seng, Marwan Ashkar, Ion Opris