Patents by Inventor Maarten J. Fonderie

Maarten J. Fonderie 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).

  • Patent number: 9654092
    Abstract: A high speed gain stage including regenerative feedback that forces one output high and one output low providing a two-state output. A differential pair of input transistors of a first conductivity type have respective current terminals coupled between a source node and first and second output nodes and have respective control terminals that receive the analog input voltages. A current source provides source current to the source node. The gain stage includes a differential pair of bias transistors of a second conductivity type having respective current terminals coupled between the first and second output nodes and a reference voltage and having respective control terminals coupled to a bias node. A pair of current-driven transistors of the second conductivity type are cross-coupled at the outputs and to a common node to provide the regenerative feedback. Another transistor is coupled between the common node and the reference voltage to increase switching speed.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: May 16, 2017
    Assignee: XCELSEM, LLC
    Inventors: Gregory L Schaffer, Maarten J Fonderie
  • Patent number: 5570052
    Abstract: A differential comparator with a hysteresis proportional to the peak value of the input signal. The comparator operates independently of the magnitude of the supply voltage and of the ambient temperature while handling both differential and single-ended inputs and without introducing a delay between the input and the output.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: October 29, 1996
    Assignee: Philips Electronics North America Corporation
    Inventors: Maarten J. Fonderie, Johan H. Huijsing, Edmond Toy
  • Patent number: 5155447
    Abstract: A multi-stage amplifier utilizes capacitive nesting of three or more amplifier stages in combination with multiple feed-forward paths to achieve frequency compensation. Two stages (A.sub.M and A.sub.O) in cascade are first nested with a pole-splitting capacitor (C1) to form a stable device. A stable three-stage amplifier is then created by nesting the two-stage device and a further stage (A.sub.I) with another pole-splitting capacitor (C2) where feed-forward paths are provided from the further stage to both of the other stages.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: October 13, 1992
    Assignee: Signetics Company
    Inventors: Johan H. Huijsing, Maarten J. Fonderie
  • Patent number: 5109170
    Abstract: An electronic current compensation circuit which includes a series connections of a load (L) and a first control current source (3) and also includes a current follower (7). A second control current source (6) identical to the first control current source is connected to the input (8) and the first output (9) of the current follower. A second output of the current follower is connected to the junction (4) of the load and the first control current source to compensate for the load current (i.sub.L).
    Type: Grant
    Filed: February 12, 1991
    Date of Patent: April 28, 1992
    Assignee: U.S. Philips Corp.
    Inventors: Johan H. Huijsing, Maarten J. Fonderie