Patents by Inventor Thean-Liang Lee

Thean-Liang Lee 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).

  • Circuits for preventing unwanted output transients in amplifiers during power-up
    Patent number: 6154092
    Abstract: The present invention reduces certain unwanted transients in an output stage by sensing the power supply and disabling the output stage output devices in correlation with the sensing of an invalid bias. In preferred embodiments, the bias is measured at a node that is the last bias node to reach a steady state during power up or power glitches. This ensures that all portions of the output stage are being provided a valid bias prior to enabling the output devices of the output stage. By enabling the output devices only after a valid bias is present, signals generated by the output devices are based upon valid operation of the output stage.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: November 28, 2000
    Assignee: Maxim Integrated Products
    Inventors: Thean-Liang Lee, Frank W. Singor, Gaurang A. Shah