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. 05, 2016
Filed:
Jun. 13, 2014
Stmicroelectronics (Grenoble 2) Sas, Grenoble, FR;
Stmicroelectronics, S.r.l., Agrate Brianza, IT;
MarcoOrazio Cavallaro, Catania, IT;
Serge Ramet, Jarrie, FR;
Tiziano Chiarillo, Tremestieri Etneo, IT;
STMICROELECTRONICS (GRENOBLE 2) SAS, Grenoble, FR;
STMICROELECTRONICS S.R.L., Agrate Brianza (MB), IT;
Abstract
A class AB operational amplifier includes an input stage, an output stage and a level shifter stage to control the quiescent current of the output stage and to transfer the signal from the input stage to the output stage, and a control circuit of the level shifter stage. The control circuit includes a transistor differential pair having a differential input terminals and the differential voltage at the differential terminals of the differential pair controls the level shifter stage.