Patents by Inventor Preston S. BIRDSONG

Preston S. BIRDSONG 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).

  • System and method for dynamic element matching for delta sigma converters
    Patent number: 11757466
    Abstract: Systems and methods for improving the efficiency of a rotational dynamic element matching (DEM) for Delta Sigma converters. In some implementations, the systems and methods are provided for reducing intersymbol interference (ISI) of a Delta Sigma converter. A delta sigma converter architecture can include multiple I-DACs, and the output from each I-DAC can vary from the other l-DACs. Techniques include decreasing mismatch among multiple l-DACs while improving efficiency of rotational dynamic element matching.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: September 12, 2023
    Assignee: Analog Devices, Inc.
    Inventors: Abhishek Bandyopadhyay, Preston S. Birdsong, Adam R. Spirer
  • System and method to enhance noise performance in a delta sigma converter
    Patent number: 11658678
    Abstract: Systems and methods for improving noise efficiency in a Delta Sigma modulator. A bypass scheme for a noise splitter is disclosed that reduces toggling activity for small signals. In particular, a sample-by-sample bypass noise splitter is disclosed that includes a noise splitting module and a bypass line. The bypass line bypasses the noise splitting module when signals are below a selected threshold, increasing efficiency of the system.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: May 23, 2023
    Assignee: Analog Devices, Inc.
    Inventors: Abhishek Bandyopadhyay, Preston S. Birdsong, Adam R. Spirer
  • System and method to enhance noise performance in a delta sigma converter
    Patent number: 11509327
    Abstract: Systems and methods for a power-efficient 3-level digital-to-analog converter. A converter cell using a current starving technique keeps a portion of the converter cell turned on in a low power mode, as opposed to completely turning off current in selected modes. A conversion system keeps a first set of converters active while allowing a second set of converters to be powered down. Systems and methods presented save power and allow for efficient reactivation of converters.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: November 22, 2022
    Assignee: Analog Devices, Inc.
    Inventors: Preston S. Birdsong, Abhishek Bandyopadhyay, Adam R. Spirer
  • SYSTEM AND METHOD FOR DYNAMIC ELEMENT MATCHING FOR DELTA SIGMA CONVERTERS
    Publication number: 20220045693
    Abstract: Systems and methods for improving the efficiency of a rotational dynamic element matching (DEM) for Delta Sigma converters. In some implementations, the systems and methods are provided a for reducing intersymbol interference (ISI) of a Delta Sigma converter. A delta sigma converter architecture can include multiple I-DACs, and the output from each I-DAC can vary from the other I-DACs. Techniques are disclosed for decreasing mismatch among multiple I-DACs while improving efficiency of rotational dynamic element matching.
    Type: Application
    Filed: August 6, 2021
    Publication date: February 10, 2022
    Applicant: Analog Devices, Inc.
    Inventors: Abhishek Bandyopadhyay, Preston S. Birdsong, Adam R. Spirer
  • SYSTEM AND METHOD TO ENHANCE NOISE PERFORMANCE IN A DELTA SIGMA CONVERTER
    Publication number: 20220045692
    Abstract: Systems and methods for a power-efficient 3-level digital-to-analog converter. A converter cell using a current starving technique keeps a portion of the converter cell turned on in a low power mode, as opposed to completely turning off current in selected modes. A conversion system keeps a first set of converters active while allowing a second set of converters to be powered down. Systems and methods presented save power and allow for efficient reactivation of converters.
    Type: Application
    Filed: August 6, 2021
    Publication date: February 10, 2022
    Applicant: Analog Devices, Inc.
    Inventors: Preston S. BIRDSONG, Abhishek BANDYOPADHYAY, Adam R. SPIRER
  • SYSTEM AND METHOD TO ENHANCE NOISE PERFORMANCE IN A DELTA SIGMA CONVERTER
    Publication number: 20220045694
    Abstract: Systems and methods for improving noise efficiency in a Delta Sigma modulator. A bypass scheme for a noise splitter is disclosed that reduces toggling activity for small signals. In particular, a sample-by-sample bypass noise splitter is disclosed that includes a noise splitting module and a bypass line. The bypass line bypasses the noise splitting module when signals are below a selected threshold, increasing efficiency of the system.
    Type: Application
    Filed: August 6, 2021
    Publication date: February 10, 2022
    Applicant: Analog Devices, Inc.
    Inventors: Abhishek BANDYOPADHYAY, Preston S. BIRDSONG, Adam R. SPIRER