Patents by Inventor Eric B. Blecker

Eric B. Blecker 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).

  • Operational amplifier with increased common mode input range
    Patent number: 7142056
    Abstract: An operational amplifier includes a first stage with a first differential transistor pair inputting a differential input signal at their gates, a first tail current source transistor connected to sources of the first differential transistor pair, and a load transistor pair connected in series with the drain of first differential transistor pair. An input stage includes a second differential transistor pair connected to respective drains of the first differential transistor pair at their gates, and a second tail current transistor connected to sources of the differential transistor pair. An output stage outputs a signal corresponding to the differential input signal.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: November 28, 2006
    Assignee: Broadcom Corporation
    Inventors: Eric B. Blecker, Sumant Ranganathan
  • Operational amplifier with increased common mode input range
    Publication number: 20040196100
    Abstract: An operational amplifier includes a first stage with a first differential transistor pair inputting a differential input signal at their gates, a first tail current source transistor connected to sources of the first differential transistor pair, and a load transistor pair connected in series with the drain of first differential transistor pair. An input stage includes a second differential transistor pair connected to respective drains of the first differential transistor pair at their gates, and a second tail current transistor connected to sources of the differential transistor pair. An output stage outputs a signal corresponding to the differential input signal.
    Type: Application
    Filed: April 14, 2004
    Publication date: October 7, 2004
    Applicant: Broadcom Corporation
    Inventors: Eric B. Blecker, Sumant Ranganathan
  • Operational amplifier with increased common mode input range
    Patent number: 6756847
    Abstract: An operational amplifier includes a first stage with a first differential transistor pair inputting a differential input signal at their gates, a first tail current source transistor connected to sources of the first differential transistor pair, and a load transistor pair connected in series with the drain of first differential transistor pair. An input stage includes a second differential transistor pair connected to respective drains of the first differential transistor pair at their gates, and a second tail current transistor connected to sources of the differential transistor pair. An output stage outputs a signal corresponding to the differential input signal.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: June 29, 2004
    Assignee: Broadcom Corporation
    Inventors: Eric B. Blecker, Sumant Ranganathan
  • Operational amplifier with increased common mode input range
    Publication number: 20030222715
    Abstract: An operational amplifier includes a first stage with a first differential transistor pair inputting a differential input signal at their gates, a first tail current source transistor connected to sources of the first differential transistor pair, and a load transistor pair connected in series with the drain of first differential transistor pair. An input stage includes a second differential transistor pair connected to respective drains of the first differential transistor pair at their gates, and a second tail current transistor connected to sources of the differential transistor pair. An output stage outputs a signal corresponding to the differential input signal.
    Type: Application
    Filed: February 26, 2003
    Publication date: December 4, 2003
    Inventors: Eric B. Blecker, Sumant Ranganathan