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. 21, 2009
Filed:
Nov. 15, 2007
Ji Woon Jung, Gwangmyeong-si, KR;
Ju Hyun Ko, Yongin-si, KR;
Ji Woon Jung, Gwangmyeong-si, KR;
Ju Hyun Ko, Yongin-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Abstract
A digital to analog converter includes first and second capacitors, an operational amplifier and a switching circuit. The operational amplifier includes first and second input terminals and an output terminal, the second input terminal receiving a reference voltage. The switching circuit includes multiple switches which switch in response to corresponding switching signals. The switching circuit connects the second capacitor between the output terminal and the first input terminal of the operational amplifier, while respectively sending first and second voltages to first and second terminals of the first capacitor during a first period. The switching circuit also connects the first capacitor between the output terminal and the first input terminal of the operational amplifier, while respectively sending third and fourth voltages to first and second terminals of the second capacitor during a second period consecutively following the first period.