Patents by Inventor Samuel P. Justice

Samuel P. Justice 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).

  • Low noise chopper stabilized amplifier and method of operation
    Patent number: 4931745
    Abstract: A chopper op amp (10) is provided having an input chopping waveform (70). Input chopping waveform E (70) is used to generate waveform C (76) and waveform D (78) for activating switch C (36) and switch D (38), respectively. The high period of waveforms C (76) and D (78) are reduced relative to the chopping waveform (70), thereby corresponding to a reduced duty cycle for chopper op amp (10). The period (88, 90) of chopping waveform (70) may be reduced below two milliseconds.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: June 5, 1990
    Assignee: Texas Instruments Incorporated
    Inventors: Larry Goff, Lawrence A. King, Daniel B. Barnett, Samuel P. Justice