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:
Sep. 15, 2026
Filed:
Dec. 11, 2023
Stmicroelectronics International N.v., Geneva, CH;
Lorenzo Giancristofaro, Milan, IT;
STMicroelectronics International N.V., Geneva, CH;
Abstract
Described herein is an operational transconductance amplifier (OTA) with a constant current source that provides a constant current to a node. The OTA includes two input pairs of transistors: the first sources variable currents based on feedback and input voltages, while the second sinks variable currents also based on feedback and input voltages. A folded cascode arrangement includes two branches, with one branch including a Monticelli cell. A class-AB output stage is present, with its inputs connected across the Monticelli cell. Additionally, a bias stage mirrors and scales the constant current to generate control voltages. Within the folded cascode branches, compensation transistors are controlled by these control voltages, ensuring that various sourced and sunk variable currents are of equal magnitude, making the OTA input voltage independent.