Patents by Inventor Humberto Andrade de Fonseca

Humberto Andrade de Fonseca 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).

  • Slew rate limited driver with accurate slope
    Patent number: 10868527
    Abstract: Aspects of the present disclosure address a slew rate controlled driver. The slew rate controlled driver includes an amplifier with a capacitive feedback loop and a current generator capable of producing a current that is proportional to on-chip capacitance. The current generator is implemented using a switched capacitor and supplies the driver with a current that is proportional to the capacitance of the switched capacitor. By supplying the driver with current that is proportional to the capacitance of the switched capacitor, the slope of the output signal of the driver is proportional to the ratio of the switched capacitance and a capacitance of the driver's capacitive feedback loop.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: December 15, 2020
    Assignee: Cadence Design Systems, Inc.
    Inventor: Humberto Andrade de Fonseca