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. 06, 2004
Filed:
Apr. 16, 2003
Applicant:
Inventors:
Ming-Hsiang Chiou, Hsinchu, TW;
Chen-Yu Hsiao, Pingtung, TW;
Assignee:
Frontend Analog and Digital Technology Corporation, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G 7/24 ; G06F 7/556 ;
U.S. Cl.
CPC ...
G06G 7/24 ; G06F 7/556 ;
Abstract
A switching mode N-order circuit comprises a first unit, a second unit and a comparator. The first unit includes an operational amplifier integral circuit to integrate a first voltage. The second unit has one or more stages of subunits in cascade each including an operational amplifier integral circuit to integrate a second voltage stage by stage. Each of the operational amplifier integral circuits is equipped with a switch to be controlled by the comparator to be discharged. The output of the N-order circuit is derived from the output of the second unit.