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. 26, 2017
Filed:
Sep. 27, 2016
Globalfoundries Inc., Grand Cayman, KY;
Abdellatif Bellaouar, Richardson, TX (US);
Sher Jiun Fang, Allen, TX (US);
GLOBALFOUNDRIES INC., Grand Cayman, KY;
Abstract
Disclosed is an amplifier circuit having a single-ended input and differential outputs. The differential outputs are achieved using a first output branch and a second output branch, each including a common source FET (CS-FET) and a common gate FET (CG-FET) connected in series between ground and a corresponding out node connected to a load. An input signal is applied to the CS-FET in the first output branch and an intermediate signal at an intermediate node between the CS-FET and the CG-FET in the first output branch is applied to the CS-FET in the second output branch. The CG-FET in the first output branch and the CS-FET in the second output branch are equal in size such that their transconductances are approximately equal, such that currents in the two output branches are inverted and the outputs at the output nodes of the two output branches are differential outputs.