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:
Feb. 20, 2007
Filed:
Apr. 15, 2005
Sang Suk Kim, Kyunggi-Do, KR;
Kyoung Soo Kwon, Kyunggi-Do, KR;
Jung Chul Gong, Seoul, KR;
Hyeon Seok Hwang, Seoul, KR;
Sang Suk Kim, Kyunggi-Do, KR;
Kyoung Soo Kwon, Kyunggi-Do, KR;
Jung Chul Gong, Seoul, KR;
Hyeon Seok Hwang, Seoul, KR;
Samsung Electro-Mechanics Co., Ltd., Kyunggi-Do, KR;
Abstract
Disclosed herein is a PhotoDiode Integrated Circuit (PDIC) having multiple gain states. The PDIC includes a current-voltage conversion unit, an input amplification stage circuit, a reference resistance unit, a feedback resistance unit, and a switching unit. The current-voltage conversion unit converts a current signal into a voltage signal. The input amplification stage circuit is connected to the current-voltage conversion unit to receive and amplify the voltage signal. The reference resistance unit is connected to the second input terminal of the input amplification stage circuit. The output amplification stage circuit is connected to the output terminal of the input amplification stage circuit. The feedback resistance unit is connected in parallel between the second input terminal and the output terminal of the output amplification stage circuit, and is configured to have a plurality of resistance elements. The switching unit selectively connects the plurality of resistance elements.