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. 21, 2006
Filed:
Dec. 31, 2003
Chao-cheng Lee, HsinChu, TW;
Jui-cheng Huang, Hsinchu, TW;
Jui-yuan Tsai, Tainan, TW;
Wen-chi Wang, Siluo Township, Yunlin County, TW;
Chao-Cheng Lee, HsinChu, TW;
Jui-Cheng Huang, Hsinchu, TW;
Jui-Yuan Tsai, Tainan, TW;
Wen-Chi Wang, Siluo Township, Yunlin County, TW;
Realtek Semiconductors Corp., Hsinchu, CN;
Abstract
An amplifier circuit having a high time constant. An operational amplifier includes a non-converting input terminal coupled to a ground, a converting input terminal and an output terminal. A first resistor network including at least one stage is coupled between the converting input terminal and the output terminal. Each stage of the first resistor network includes a first node, a first current path and a second current path connected to the first node. The first current path of each stage of the first resistor network is connected to the first node of the next stage, the second current path of each stage of the first resistor network is grounded, and the first current path of the first stage of the first resistor network is connected to the converting input terminal. A loading unit is coupled between the converting input terminal and the output terminal.