Patents by Inventor Danielle Lyn Griffith

Danielle Lyn Griffith 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).

  • Oscillator closed loop frequency control
    Patent number: 11496140
    Abstract: An electronic device comprises a regulator, and an oscillator and a resistor coupled to the regulator. The electronic device further comprises a feedback controller that includes a differential amplifier coupled between the oscillator, the resistor, and the regulator. The feedback controller is configured to apply a control voltage to the regulator in response to a resistor voltage upon the resistor and an oscillator voltage upon the oscillator. The feedback controller can be coupled to control a substantially equal voltage upon the resistor and the oscillator.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: November 8, 2022
    Assignee: Texas Instruments Incorporated
    Inventors: Per Torstein Roine, Danielle Lyn Griffith
  • OSCILLATOR CLOSED LOOP FREQUENCY CONTROL
    Publication number: 20210167785
    Abstract: An electronic device comprises a regulator, and an oscillator and a resistor coupled to the regulator. The electronic device further comprises a feedback controller that includes a differential amplifier coupled between the oscillator, the resistor, and the regulator. The feedback controller is configured to apply a control voltage to the regulator in response to a resistor voltage upon the resistor and an oscillator voltage upon the oscillator. The feedback controller can be coupled to control a substantially equal voltage upon the resistor and the oscillator.
    Type: Application
    Filed: February 16, 2021
    Publication date: June 3, 2021
    Inventors: Per Torstein Roine, Danielle Lyn Griffith
  • Oscillator closed loop frequency control
    Patent number: 10924126
    Abstract: An electronic device comprises a regulator, and an oscillator and a resistor coupled to the regulator. The electronic device further comprises a feedback controller that includes a differential amplifier coupled between the oscillator, the resistor, and the regulator. The feedback controller is configured to apply a control voltage to the regulator in response to a resistor voltage upon the resistor and an oscillator voltage upon the oscillator. The feedback controller can be coupled to control a substantially equal voltage upon the resistor and the oscillator.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: February 16, 2021
    Assignee: Texas Instruments Incorporated
    Inventors: Per Torstein Røine, Danielle Lyn Griffith
  • OSCILLATOR CLOSED LOOP FREQUENCY CONTROL
    Publication number: 20200304132
    Abstract: An electronic device comprises a regulator, and an oscillator and a resistor coupled to the regulator. The electronic device further comprises a feedback controller that includes a differential amplifier coupled between the oscillator, the resistor, and the regulator. The feedback controller is configured to apply a control voltage to the regulator in response to a resistor voltage upon the resistor and an oscillator voltage upon the oscillator. The feedback controller can be coupled to control a substantially equal voltage upon the resistor and the oscillator.
    Type: Application
    Filed: March 22, 2019
    Publication date: September 24, 2020
    Inventors: Per Torstein RØINE, Danielle Lyn GRIFFITH
  • Resistor self-trim circuit for increased performance
    Patent number: 7642852
    Abstract: In a method and apparatus for trimming values of load resistors to reduce variations there between, a common mode feedback loop (CMFBL) included in a differential amplifier is switched from operating in a closed loop mode to operate in an open loop mode. The CMFBL includes an operational amplifier (OA) generating an output signal. A selector switch, coupled to receive the output signal, is operable to switch a path of the output signal in response to a CAL signal. In the closed loop mode, the selector switch routes the output signal to a feedback loop to provide a regulated current to the load resistors. In the open loop mode, the OA operates as a comparator and the output signal is provided as a digital signal. The selector switch provides the digital signal to a controller to digitally trim the values of the load resistors.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: January 5, 2010
    Assignee: Texas Instruments Incorporated
    Inventors: Gaurav Chandra, Danielle Lyn Griffith
  • RESISTOR SELF-TRIM CIRCUIT FOR INCREASED PERFORMANCE
    Publication number: 20090267693
    Abstract: In a method and apparatus for trimming values of load resistors to reduce variations there between, a common mode feedback loop (CMFBL) included in a differential amplifier is switched from operating in a closed loop mode to operate in an open loop mode. The CMFBL includes an operational amplifier (OA) generating an output signal. A selector switch, coupled to receive the output signal, is operable to switch a path of the output signal in response to a CAL signal. In the closed loop mode, the selector switch routes the output signal to a feedback loop to provide a regulated current to the load resistors. In the open loop mode, the OA operates as a comparator and the output signal is provided as a digital signal. The selector switch provides the digital signal to a controller to digitally trim the values of the load resistors.
    Type: Application
    Filed: April 25, 2008
    Publication date: October 29, 2009
    Inventors: Gaurav Chandra, Danielle Lyn Griffith