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. 25, 2014
Filed:
Mar. 15, 2012
Muh-tian Shiue, Hsinchu, TW;
Kai-wen Yao, Hengchung Township, Pingtung County, TW;
Cihun-siyong Gong, Kaohsiung, TW;
Muh-Tian Shiue, Hsinchu, TW;
Kai-Wen Yao, Hengchung Township, Pingtung County, TW;
Cihun-Siyong Gong, Kaohsiung, TW;
National Central University, Jhongli, Taoyuan County, TW;
Abstract
A tunable voltage-controlled pseudo-resistor structure, comprising: a symmetric PMOS transistor circuit and an auto-tuning circuit connected in series. Input of the auto-tuning circuit is connected to a central position Vof the PMOS transistor circuit having its output V, with its purpose of keeping V−Vat a constant value. The PMOS transistor circuit may produce body effect through various different bulk voltages. Through the auto-tuning circuit, Vand Vare kept constant to make current of transistor to produce compensation effect, such that regardless of V>Vor V<V, a large resistance is maintained. Through utilizing the tunable voltage-controlled pseudo-resistor structure, constant resistance can be maintained under high input voltage, hereby reducing drifting of common-mode voltage, in achieving a superior resistance effect.