Patents by Inventor Rohit ROTHE

Rohit ROTHE 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).

  • Amplifier with sample and average common mode feedback resistor
    Patent number: 11888451
    Abstract: An amplifier is presented with a sample and average common mode feedback resistor. The amplifier circuit includes a feedback capacitor and a feedback resistor in parallel with the feedback capacitor, where the feedback capacitor and the feedback resistor form part of the negative feedback path for the amplifier. Of note, the feedback resistor is comprised of a low pass filter in series with a switched capacitor resistor, such that the low pass filter is electrically coupled to the output of the amplifier circuit and the switched capacitor resistor is electrically coupled to the inverting input of the amplifier circuit. The amplifier circuit further includes a control circuit interfaced with switches of the switched capacitor resistor. The high pass corner of the switched capacitor resistor is preferably lower than corner of the low pass filter.
    Type: Grant
    Filed: April 29, 2021
    Date of Patent: January 30, 2024
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Rohit Rothe, Sechang Oh, Kyojin Choo, Seok Hyeon Jeong, Dennis Sylvester, David T. Blaauw
  • AMPLIFIER WITH SAMPLE AND AVERAGE COMMON MODE FEEDBACK RESISTOR
    Publication number: 20210344306
    Abstract: An amplifier is presented with a sample and average common mode feedback resistor. The amplifier circuit includes a feedback capacitor and a feedback resistor in parallel with the feedback capacitor, where the feedback capacitor and the feedback resistor form part of the negative feedback path for the amplifier. Of note, the feedback resistor is comprised of a low pass filter in series with a switched capacitor resistor, such that the low pass filter is electrically coupled to the output of the amplifier circuit and the switched capacitor resistor is electrically coupled to the inverting input of the amplifier circuit. The amplifier circuit further includes a control circuit interfaced with switches of the switched capacitor resistor. The high pass corner of the switched capacitor resistor is preferably lower than corner of the low pass filter.
    Type: Application
    Filed: April 29, 2021
    Publication date: November 4, 2021
    Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Rohit ROTHE, Sechang OH, Kyojin CHOO, Seok Hyeon JEONG, Dennis SYLVESTER, David T. BLAAUW