Patents by Inventor Yu Ang Yang

Yu Ang Yang 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).

  • Switched-capacitor circuits and methods with improved settling time and systems using the same
    Patent number: 6509790
    Abstract: A switched capacitor circuit (300) including an operational amplifier (206) having an input and an output, a sampling capacitor (203) and a set of switches (204, 205, 301, and 302) are disclosed. During a first phase, switches (201, 204) sample an input voltage by charging sampling capacitor (203). During a first portion of a second phase, the operational amplifier input is electrically coupled to sampling capacitor (203) through a first path including switch (301) having a first time constant. During a second portion of the second phase, the operational amplifier input is electrically coupled with sampling capacitor (203) through a second path including switch (302) having a second time constant, the second time constant being smaller than the first time constant.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: January 21, 2003
    Assignee: Cirrus Logic, Inc.
    Inventor: Yu Ang Yang