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:
Dec. 02, 2025
Filed:
Sep. 22, 2021
Nordic Semiconductor Asa, Trondheim, NO;
Dominik Przyborowski, Trondheim, NO;
Nordic Semiconductor ASA, Trondheim, NO;
Abstract
A common-mode feedback circuit for a fully differential amplifier comprises first (M), second (M), and third (M) transistors, each having a respective drain, source, gate, and back-gate terminals. The drain terminal of the first transistor (M) and the gate terminals of the first, second, and third transistors (M, M, M) are connected together at a bias current terminal. The drain terminals of the second and third transistors are connected together at a tail current terminal. The source terminals of the first, second, and third transistors are connected together. The back-gate terminal of the first transistor (M) is arranged to receive a common-mode reference voltage input (V), the back-gate terminal of the second transistor (M) is arranged to receive a positive output voltage (V) from the fully differential amplifier, and the back-gate terminal of the third transistor (M) is arranged to receive a negative output voltage (V) from the fully differential amplifier.