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:
Nov. 10, 2015
Filed:
Dec. 23, 2013
Mediatek Inc., Hsin-Chu, TW;
Chi Yun Wang, Tainan, TW;
Chih-Hong Lou, Jiaosi Township, Yilan County, TW;
MEDIATEK INC., Hsin-Chu, TW;
Abstract
A dynamic feed-forward OPAMP-based circuit is provided. A first amplifying stage amplifies a pair of input differential signals to provide a pair of intermediate differential signals. A second amplifying stage amplifies the pair of intermediate differential signals to provide a pair of output differential signals. A first capacitor is coupled to a non-inverting input terminal of the first amplifying stage. A second capacitor is coupled to an inverting input terminal of the first amplifying stage. A feed-forward transconductance stage is coupled between the first and second capacitors and the second amplifying stage. The first and second capacitors and the feed-forward stage form a high-frequency path with a first gain curve, and the first amplifying stage and the second amplifying stage form a high-gain path with a second gain curve. The operational amplifier provides an open-loop gain according to the first and second gain curves.