The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 14, 2014
Filed:
May. 29, 2012
Matteo Albertini, Cornaredo, IT;
Daniele Ronchi, Maslianico, IT;
Sandro Rossi, Pavia, IT;
Giulio Ricotti, Broni, IT;
Matteo Albertini, Cornaredo, IT;
Daniele Ronchi, Maslianico, IT;
Sandro Rossi, Pavia, IT;
Giulio Ricotti, Broni, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
The disclosure relates to a driving method for obtaining a linear gain variation of a transconductance amplifier that includes a first differential transistor cell, with adjustment of a driving voltage value of a degenerative driving transistor of the transconductance amplifier The method includes generating an output current signal of a second differential cell corresponding to the first differential transistor cell of the transconductance amplifier, the output current signal having a linear relationship with a transconductance value of the second differential cell as the driving voltage varies; generating a reference current signal having a linear relationship with a differential input voltage; comparing the output current signal and the reference current signal for adjusting the driving voltage value; and modifying the transconductance value of the second differential cell up to a balance of the current signals.