Patents Represented by Attorney P. Verdonk

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  • Merged differential amplifier and current source
    Patent number: 5115206
    Abstract: The tail current of a differential transistor pair (12 and 14) is controlled by a feed-back means (40) that couples the pair's tail node (16) to the control input of each transistor for controlling a biasing current through each transistor. The control input of each transistor further receives an input signal in addition to an output signal of the feed-back means. As a result, the circuit has a stable and accurate tail current, and in addition is suitable for a low-voltage supply or for high-current operation.
    Type: Grant
    Filed: November 8, 1990
    Date of Patent: May 19, 1992
    Assignee: North American Philips Corp., Signetics Division
    Inventors: William D. Mack, Daniel J. Linebarger