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:
Apr. 23, 2013
Filed:
Apr. 01, 2011
Merit Hong, Chandler, AZ (US);
Merit Hong, Chandler, AZ (US);
Fujitsu Semiconductor Limited, Yokohama-shi, JP;
Abstract
A differential amplifier circuit with common-mode feedback is disclosed. The amplifier may include a first stage comprising a first differential input configured to drive a first differential pair transistor in a first differential current path, a second differential input configured to drive a second differential pair transistor in a second differential current path, a first differential output, and a second differential output, a second stage comprising a first differential input, a second differential input, a first differential output, and a second differential output, a common-mode feedback circuit, a first conducting element in a first common-mode current path parallel to the first differential current path and comprising a first conducting terminal coupled to the first differential output of the first stage, and a second conducting element in a second common-mode current path parallel to the second differential current path and comprising a first conducting terminal coupled to the second differential output of the first stage.