Patents by Inventor Maher M. Sarraj

Maher M. Sarraj 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).

  • Buffered bootstrapped input switch with cancelled charge sharing for use in high performance sample and hold switched capacitor circuits
    Patent number: 6724236
    Abstract: A buffered bootstrapped input switch employs cancelled charge sharing for use in high performance sample and hold switched capacitor circuits especially useful for implementing, for example, an analog-to-digital converter (ADC) or amplifier circuit front end sampling network, among others. A scheme is employed for estimating the charge loss from the bootstrapping capacitor to the gate of the bootstrapped input switch, storing the estimated charge loss on a small capacitor, buffering the small capacitor, and then adding the estimated charge loss in series to the bootstrap capacitor, to provide an almost ideal bootstrap network.
    Type: Grant
    Filed: October 12, 2002
    Date of Patent: April 20, 2004
    Assignee: Texas Instruments Incorporated
    Inventor: Maher M. Sarraj
  • BUFFERED BOOTSTRAPPED INPUT SWITCH WITH CANCELLED CHARGE SHARING FOR USE IN HIGH PERFORMANCE SAMPLE AND HOLD SWITCHED CAPACITOR CIRCUITS
    Publication number: 20040070439
    Abstract: A buffered bootstrapped input switch employs cancelled charge sharing for use in high performance sample and hold switched capacitor circuits especially useful for implementing, for example, an analog-to-digital converter (ADC) or amplifier circuit front end sampling network, among others. A scheme is employed for estimating the charge loss from the bootstrapping capacitor to the gate of the bootstrapped input switch, storing the estimated charge loss on a small capacitor, buffering the small capacitor, and then adding the estimated charge loss in series to the bootstrap capacitor, to provide an almost ideal bootstrap network.
    Type: Application
    Filed: October 12, 2002
    Publication date: April 15, 2004
    Inventor: Maher M. Sarraj
  • Sample and hold circuit
    Patent number: 6636084
    Abstract: A sample and hold circuit includes an operational amplifier and a plurality of switched capacitors, the switched capacitors introducing a closed loop gain of one-half for the operational amplifier.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: October 21, 2003
    Assignee: Texas Instruments Incorporated
    Inventor: Maher M. Sarraj
  • Sample and hold circuit
    Publication number: 20020000924
    Abstract: A sample and hold circuit includes an operational amplifier and a plurality of switched capacitors, the switched capacitors introducing a closed loop gain of one-half for the operational amplifier.
    Type: Application
    Filed: December 18, 2000
    Publication date: January 3, 2002
    Inventor: Maher M. Sarraj