Patents by Inventor Herming CHIUEH

Herming CHIUEH 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).

  • Differential two-stage amplifier and operation method thereof
    Patent number: 9825601
    Abstract: A differential two-stage amplifier is provided. The differential two-stage amplifier includes an input circuit, a bias circuit, a common mode feedback circuit, a first stage amplifier, a second stage amplifier and a current compensation circuit. The input circuit receives an input current. The bias circuit provides a bias current. The first stage amplifier is coupled to the input circuit and the second stage amplifier. The common mode feedback circuit is coupled to the second stage amplifier and adjusts a common mode feedback current according to a common mode voltage, wherein the input current is made up of the bias current and the common mode feedback current. The current compensation circuit provides a compensation current, wherein when a temperature of the differential two-stage amplifier is greater than a predetermined temperature, the compensation current is input to the input circuit.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: November 21, 2017
    Assignee: Winbond Electronics Corp.
    Inventors: Tsung-Fu Tsai, Herming Chiueh
  • Electronic system and auto configuration method for an operational amplifier in the electronic system
    Patent number: 9503031
    Abstract: The invention provides an auto configuration method for an operational amplifier in an electronic system. The method includes steps of estimating an internal resistance of the electronic system; estimating an operation frequency of the electronic system; and determining a control parameter to adjust a characteristic of the operational amplifier according to the internal resistance and the operation frequency.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: November 22, 2016
    Assignee: WINBOND ELECTRONICS CORP.
    Inventors: Sheng-Cheng Lee, Herming Chiueh
  • ELECTRONIC SYSTEM AND AUTO CONFIGURATION METHOD FOR AN OPERATIONAL AMPLIFIER IN THE ELECTRONIC SYSTEM
    Publication number: 20160211808
    Abstract: The invention provides an auto configuration method for an operational amplifier in an electronic system. The method includes steps of estimating an internal resistance of the electronic system; estimating an operation frequency of the electronic system; and determining a control parameter to adjust a characteristic of the operational amplifier according to the internal resistance and the operation frequency.
    Type: Application
    Filed: January 21, 2015
    Publication date: July 21, 2016
    Inventors: Sheng-Cheng LEE, Herming CHIUEH
  • DIFFERENTIAL TWO-STAGE AMPLIFIER AND OPERATION METHOD THEREOF
    Publication number: 20160079931
    Abstract: A differential two-stage amplifier is provided. The differential two-stage amplifier includes an input circuit, a bias circuit, a common mode feedback circuit, a first stage amplifier, a second stage amplifier and a current compensation circuit. The input circuit receives an input current. The bias circuit provides a bias current. The first stage amplifier is coupled to the input circuit and the second stage amplifier. The common mode feedback circuit is coupled to the second stage amplifier and adjusts a common mode feedback current according to a common mode voltage, wherein the input current is made up of the bias current and the common mode feedback current. The current compensation circuit provides a compensation current, wherein when a temperature of the differential two-stage amplifier is greater than a predetermined temperature, the compensation current is input to the input circuit.
    Type: Application
    Filed: April 13, 2015
    Publication date: March 17, 2016
    Inventors: Tsung-Fu TSAI, Herming CHIUEH