Patents by Inventor Todd Weigandt

Todd Weigandt 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).

  • INPUT SYSTEM FOR A VARIABLE GAIN AMPLIFIER HAVING CLASS-AB TRANSCONDUCTANCE STAGES
    Publication number: 20070290757
    Abstract: A variable gain amplifier includes an attenuator having a plurality of pairs of tap points, and a plurality of pairs of gm cells, wherein each pair of gm cells is coupled to a corresponding pair of the tap points, and each pair of gm cells is constructed and arranged to operate as a multi-tan h cell.
    Type: Application
    Filed: August 21, 2007
    Publication date: December 20, 2007
    Applicant: ANALOG DEVICES, INC.
    Inventors: Barrie Gilbert, Todd Weigandt, Eberhard Brunner
  • Input system for a variable gain amplifier having class-AB transconductance stages
    Publication number: 20060238254
    Abstract: An amplifier has an input terminal to receive an input signal. The amplifier includes a first gain stage comprising a pair of input transistors and a second gain stage to drive an output stage. The output stage provides inverting and non-inverting differential output signals on inverting and non-inverting output nodes. The amplifier may also include a feedback signal electrically connected between the inverting and non-inverting output nodes to emitters of the input transistors through a resistor network.
    Type: Application
    Filed: June 1, 2006
    Publication date: October 26, 2006
    Inventors: Barrie Gilbert, Todd Weigandt
  • Single-ended input, differential output low noise amplifier
    Publication number: 20050057304
    Abstract: An amplifier has an input terminal to receive an input signal. The amplifier includes a first gain stage comprising a pair of input transistors and a second gain stage to drive an output stage. The output stage provides inverting and non-inverting differential output signals on inverting and non-inverting output nodes. The amplifier may also include a feedback signal electrically connected between the inverting and non-inverting output nodes to emitters of the input transistors through a resistor network.
    Type: Application
    Filed: September 15, 2003
    Publication date: March 17, 2005
    Inventors: Barrie Gilbert, Todd Weigandt