Patents by Inventor John David Irwin

John David Irwin 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).

  • HYBRID ANALOG-TO-DIGITAL CONVERTER
    Publication number: 20230387934
    Abstract: An analog-to-digital converter includes a first converter stage comprising a successive-approximation-register (SAR) analog-to-digital converter (ADC), the SAR ADC being configured for voltage domain quantization, a second converter stage coupled to the first converter stage to quantize residual voltages of the voltage domain quantization, the second converter stage including a ring time-to-digital converter (TDC), and a third converter stage comprising an interpolation TDC, the interpolation TDC being coupled to the second converter stage to provide further time domain quantization.
    Type: Application
    Filed: May 24, 2022
    Publication date: November 30, 2023
    Inventors: Haoyi Zhao, Fa Dai, John David Irwin
  • Hybrid analog-to-digital converter
    Patent number: 11784653
    Abstract: An analog-to-digital converter includes a first converter stage, a second converter stage coupled to the first converter stage to quantize a residue signal of the first converter stage, and an inter-stage converter disposed between the first and second converter stages. The inter-stage converter is configured to convert between a first domain and a second domain. The inter-stage converter is configured to process the residue signal of the first converter stage such that a range of the residue signal matches a full scale of the second converter stage.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: October 10, 2023
    Assignee: Digital Analog Integration, Inc.
    Inventors: Haoyi Zhao, Fa Dai, John David Irwin
  • HYBRID ANALOG-TO-DIGITAL CONVERTER
    Publication number: 20220255553
    Abstract: An analog-to-digital converter includes a first converter stage, a second converter stage coupled to the first converter stage to quantize a residue signal of the first converter stage, and an inter-stage converter disposed between the first and second converter stages. The inter-stage converter is configured to convert between a first domain and a second domain. The inter-stage converter is configured to process the residue signal of the first converter stage such that a range of the residue signal matches a full scale of the second converter stage.
    Type: Application
    Filed: October 28, 2021
    Publication date: August 11, 2022
    Inventors: Haoyi Zhao, Fa Dai, John David Irwin
  • Hybrid analog-to-digital converter with multi-domain signal processing
    Patent number: 11239853
    Abstract: An analog-to-digital converter includes a first converter stage, a second converter stage coupled to the first converter stage to quantize a residue signal of the first converter stage, and an inter-stage converter disposed between the first and second converter stages. The inter-stage converter is configured to convert between a first domain and a second domain. The inter-stage converter is configured to process the residue signal of the first converter stage such that a range of the residue signal matches a full scale of the second converter stage.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: February 1, 2022
    Assignee: Digital Analog Integration, Inc.
    Inventors: Fa Dai, Haoyi Zhao, John David Irwin