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. 27, 2026
Filed:
Mar. 08, 2023
Applicant:
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Inventors:
Assignee:
STMicroelectronics S.r.l., Agrate Brianza, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01); H03F 3/04 (2006.01); H03G 3/30 (2006.01); H03G 1/00 (2006.01);
U.S. Cl.
CPC ...
H03G 3/30 (2013.01); H03F 3/04 (2013.01); H03G 1/0023 (2013.01); H03G 2201/103 (2013.01);
Abstract
In accordance with an embodiment, a variable gain amplifier includes: a first differential transistor pair coupled to a signal input; a first current source configured to provide a first bias current to the first differential transistor pair; a pair of diodes coupled to an output of the first differential transistor pair; a second differential transistor pair having an input coupled to the pair of diodes; a second current source configured to provide a second bias current to the second differential transistor pair; and a current control circuit coupled to the first current source and the second current source.