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:
Jul. 24, 2007
Filed:
Nov. 01, 2005
Applicant:
Chinq-shiun Chiu, Hsinchu, TW;
Inventor:
Chinq-Shiun Chiu, Hsinchu, TW;
Assignee:
Mediatek, Inc., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
Abstract
Differential amplifiers comprise a differential input stage, first, second, third, and fourth fixed current sources, a first resistive element, and a current-folding element. Due to topology thereof, the differential amplifier converts the difference between the input voltages to the voltage difference between the source voltages of the transistors in the differential pair, and a current is induced through the first resistive element, thereby generating two currents. The current-folding element folds the two currents to generate output voltages.