Patents Examined by Carol Whitehead, Jr.
  • MOS switch that reduces clock feed through in a switched capacitor circuit
    Patent number: 5900657
    Abstract: The accumulation of a small positive charge on the source of a MOS switch which occurs after the switch has been turned off due to the parasitic capacitance that exists between the gate and the source of the transistor, known as clock feedthrough, is reduced by utilizing a split-gate MOS transistor, and by continuously biasing one of the gates of the split-gate transistor.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: May 4, 1999
    Assignee: National Semiconductor Corp.
    Inventor: Richard Billings Merrill