Patents by Inventor Eunyung Sung

Eunyung Sung 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).

  • Apparatus and method for measuring current source mismatches in current-steering DAC by re-using R2R network
    Patent number: 10797720
    Abstract: A current digital-to-analog converter includes a binary current-generating section configured to generate a binary-weighted current based on a first set of control signals; a unary current-generating section configured to generate a unary-weighted current based on a second set of control signals; and a current combining circuit configured to add or subtract a reference current and a current generated by a current source of the unary current-generating section using the binary-weighted current.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: October 6, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Eunyung Sung, Nitz Saputra, Behnam Sedighi, Ashok Swaminathan, Honghao Ji, Shahin Mehdizad Taleie, Dongwon Seo
  • APPARATUS AND METHOD FOR MEASURING CURRENT SOURCE MISMATCHES IN CURRENT-STEERING DAC BY RE-USING R2R NETWORK
    Publication number: 20200099389
    Abstract: A current digital-to-analog converter includes a binary current-generating section configured to generate a binary-weighted current based on a first set of control signals; a unary current-generating section configured to generate a unary-weighted current based on a second set of control signals; and a current combining circuit configured to add or subtract a reference current and a current generated by a current source of the unary current-generating section using the binary-weighted current.
    Type: Application
    Filed: March 28, 2019
    Publication date: March 26, 2020
    Inventors: Eunyung Sung, Nitz Saputra, Behnam Sedighi, Ashok Swaminathan, Honghao Ji, Shahin Mehdizad Taleie, Dongwon Seo
  • Switched-capacitor DC blocking amplifier
    Patent number: 8638165
    Abstract: A switched-capacitor DC blocking amplifier is disclosed. In an embodiment, an integrated circuit is provided that includes an amplifier having an amplifier input and an amplifier output, a capacitor connected to the amplifier input and configured to receive an input signal, and a switched capacitor circuit coupled to provide a resistance between the amplifier input and the amplifier output. In one implementation, the switched capacitor circuit is configured with a feed forward circuit to reduce aliasing. In another implementation, the switched capacitor circuit includes a switched impedance circuit to reduce noise.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: January 28, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Peter J Shah, Shahin Mehdizad Taleie, Gerrit Groenewold, Guoqing Miao, Eunyung Sung
  • SWITCHED-CAPACITOR DC BLOCKING AMPLIFIER
    Publication number: 20120306575
    Abstract: A switched-capacitor DC blocking amplifier is disclosed. In an embodiment, an integrated circuit is provided that includes an amplifier having an amplifier input and an amplifier output, a capacitor connected to the amplifier input and configured to receive an input signal, and a switched capacitor circuit coupled to provide a resistance between the amplifier input and the amplifier output. In one implementation, the switched capacitor circuit is configured with a feed forward circuit to reduce aliasing. In another implementation, the switched capacitor circuit includes a switched impedance circuit to reduce noise.
    Type: Application
    Filed: October 11, 2011
    Publication date: December 6, 2012
    Applicant: QUALCOMM Incorporated
    Inventors: Peter J. Shah, Shahin Mehdizad Taleie, Gerrit Groenewold, Guoqing Miao, Eunyung Sung