Patents by Inventor M.J. Callahan

M.J. Callahan 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).

  • Analog switch with reduced parasitic bipolar transistor injection
    Publication number: 20060208787
    Abstract: According to the invention a well-switching arrangement, with a semiconductor circuit including a switch having an input terminal, an output terminal and a body region and at least one comparator having a first input coupled to at least one of the terminals and a second input coupled to a positive voltage rail, and logic coupled to an output of the comparator and responsive to the output to selectively couple the body-well region to one of the terminals or to the positive voltage rail.
    Type: Application
    Filed: March 18, 2005
    Publication date: September 21, 2006
    Applicant: STMicroelectronics Inc.
    Inventor: M.J. Callahan