Patents by Inventor Chih Chuan Che

Chih Chuan Che 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 current output driver with overvoltage protection
    Patent number: 7957111
    Abstract: A differential current output driver and a method for overvoltage protection of a differential current output driver circuit are provided. The output driver includes a differential current output driver circuit operable by a power supply voltage and including first and second driver transistors in a differential current configuration and first and second output pads, and an overvoltage protection circuit configured to generate a protected voltage in response to a voltage on at least one of the first and second output pads and an absence of the power supply voltage, and to apply the protected voltage to at least one transistor of the differential current output driver circuit.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: June 7, 2011
    Assignee: Analog Devices, Inc.
    Inventors: Daniel T. Boyko, Chih Chuan Che
  • Differential current output driver with overvoltage protection
    Publication number: 20090206887
    Abstract: A differential current output driver and a method for overvoltage protection of a differential current output driver circuit are provided. The output driver includes a differential current output driver circuit operable by a power supply voltage and including first and second driver transistors in a differential current configuration and first and second output pads, and an overvoltage protection circuit configured to generate a protected voltage in response to a voltage on at least one of the first and second output pads and an absence of the power supply voltage, and to apply the protected voltage to at least one transistor of the differential current output driver circuit.
    Type: Application
    Filed: February 15, 2008
    Publication date: August 20, 2009
    Applicant: Analog Devices, Inc.
    Inventors: Daniel T. Boyko, Chih Chuan Che