Patents by Inventor Felice Alberto Torrisi

Felice Alberto Torrisi 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).

  • Common-mode feedback circuit, corresponding signal processing circuit and method
    Patent number: 10135399
    Abstract: A common-mode feedback circuit includes a transconductor input stage with differential input terminals, and a frequency-compensated gain stage coupled to the transconductor input stage with differential output terminals. The common-mode feedback circuit also includes a feedback loop having a comparator configured to produce a feedback error signal for the transconductor input stage by comparing with a reference a common-mode sensing signal indicative of a common-mode voltage level sensed at the differential output terminals. In addition, the common-mode feedback loop includes a converter for converting the common-mode voltage level sensed at said differential output terminals into a current signal coupled to the comparator.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: November 20, 2018
    Assignee: STMICROELECTRONICS S.R.L.
    Inventors: Francesco Carrara, Felice Alberto Torrisi, Francesco Clerici
  • COMMON-MODE FEEDBACK CIRCUIT, CORRESPONDING SIGNAL PROCESSING CIRCUIT AND METHOD
    Publication number: 20170163222
    Abstract: A common-mode feedback circuit includes a transconductor input stage with differential input terminals, and a frequency-compensated gain stage coupled to the transconductor input stage with differential output terminals. The common-mode feedback circuit also includes a feedback loop having a comparator configured to produce a feedback error signal for the transconductor input stage by comparing with a reference a common-mode sensing signal indicative of a common-mode voltage level sensed at the differential output terminals. In addition, the common-mode feedback loop includes a converter for converting the common-mode voltage level sensed at said differential output terminals into a current signal coupled to the comparator.
    Type: Application
    Filed: February 24, 2017
    Publication date: June 8, 2017
    Inventors: Francesco Carrara, Felice Alberto Torrisi, Francesco Clerici
  • Common-mode feedback circuit, corresponding signal processing circuit and method
    Patent number: 9628028
    Abstract: A common-mode feedback circuit includes a transconductor input stage with differential input terminals, and a frequency-compensated gain stage coupled to the transconductor input stage with differential output terminals. The common-mode feedback circuit also includes a feedback loop having a comparator configured to produce a feedback error signal for the transconductor input stage by comparing with a reference a common-mode sensing signal indicative of a common-mode voltage level sensed at the differential output terminals. In addition, the common-mode feedback loop includes a converter for converting the common-mode voltage level sensed at said differential output terminals into a current signal coupled to the comparator.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: April 18, 2017
    Assignee: STMICROELECTRONICS S.R.L.
    Inventors: Francesco Carrara, Felice Alberto Torrisi, Francesco Clerici
  • COMMON-MODE FEEDBACK CIRCUIT, CORRESPONDING SIGNAL PROCESSING CIRCUIT AND METHOD
    Publication number: 20160072448
    Abstract: A common-mode feedback circuit includes a transconductor input stage with differential input terminals, and a frequency-compensated gain stage coupled to the transconductor input stage with differential output terminals. The common-mode feedback circuit also includes a feedback loop having a comparator configured to produce a feedback error signal for the transconductor input stage by comparing with a reference a common-mode sensing signal indicative of a common-mode voltage level sensed at the differential output terminals. In addition, the common-mode feedback loop includes a converter for converting the common-mode voltage level sensed at said differential output terminals into a current signal coupled to the comparator.
    Type: Application
    Filed: June 22, 2015
    Publication date: March 10, 2016
    Inventors: Francesco CARRARA, Felice Alberto TORRISI, Francesco CLERICI
  • Variable impedance circuit and apparatus comprising said variable impedance circuit
    Patent number: 7372313
    Abstract: A variable impedance circuit includes at least one fixed resistance and a plurality of transistors between a first and a second terminal. The transistors belonging to the plurality of transistors are arranged parallel to one another and parallel to the resistance and are controllable by a plurality of control signals different from one another and configured in such a way as to obtain a total impedance between said first and second terminals that is substantially variable in a continuous manner.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: May 13, 2008
    Assignee: STMicroelectronics S.r.l.
    Inventors: Michele De Fazio, Felice Alberto Torrisi