Patents by Inventor Surapap Rayanakorn

Surapap Rayanakorn 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).

  • Class AB folded-cascode amplifier having cascode compensation
    Patent number: 7639078
    Abstract: A class AB folded-cascode amplifier having improved gain-bandwidth product, comprises a differential input circuit including a differential transistor pair coupled to a source of tail current and responsive to a differential input signal for conducting a first current, a cascode circuit coupled to the differential input circuit for supplying a second current thereto, and a class AB output stage. A compensation circuit is configured for feeding back mutually complementary compensation signals from an output node to the differential input circuit. Another compensation circuit is configured for feeding back a signal from the output of the output stage to the input of the output stage.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: December 29, 2009
    Inventors: Surapap Rayanakorn, Robert C. Dobkin, Brendan J. Whelan
  • CLASS AB FOLDED-CASCODE AMPLIFIER HAVING CASCODE COMPENSATION
    Publication number: 20080272844
    Abstract: A class AB folded-cascode amplifier having improved gain-bandwidth product, comprises a differential input circuit including a differential transistor pair coupled to a source of tail current and responsive to a differential input signal for conducting a first current, a cascode circuit coupled to the differential input circuit for supplying a second current thereto, and a class AB output stage. A compensation circuit is configured for feeding back mutually complementary compensation signals from an output node to the differential input circuit. Another compensation circuit is configured for feeding back a signal from the output of the output stage to the input of the output stage.
    Type: Application
    Filed: July 16, 2008
    Publication date: November 6, 2008
    Inventors: Surapap RAYANAKORN, Robert C. Dobkin, Brendan J. Whelan
  • Class AB folded-cascode amplifier having cascode compensation
    Patent number: 7414473
    Abstract: A class AB folded-cascode amplifier having improved gain-bandwidth product, comprises a differential input circuit including a differential transistor pair coupled to a source of tail current and responsive to a differential input signal for conducting a first current, a cascode circuit coupled to the differential input circuit for supplying a second current thereto, and a class AB output stage. A compensation circuit is configured for feeding back mutually complementary compensation signals from an output node to the differential input circuit.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: August 19, 2008
    Assignee: Linear Technology Corporation
    Inventors: Surapap Rayanakorn, Robert C. Dobkin, Brendan J. Whelan