Noise Improvement of Low Frequency and Low Power Dissipation Rail-To-Rail Differential Inpup Operational Amplifier IC Design

• Main Authors: Chen, Yung-Hung, 陳永鴻
• Other Authors: Gong, Jeng
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/85124772732420524510

碩士 === 國立清華大學 === 電子工程研究所 === 97 === In this work, TSMC SiGe0.35μm technology is used to design a low noise analog integrated circuit. This work is called 「Noise Improvement of Low-frequency , Low-power Rail-To-Rail Differential Input Op-Amp」, and is simulated by H-SPICE. It uses BiCMOS technology replacing CMOS technology in the differential input stage to improve noise in Op-Amp circuits. Through simulation and comparison, the results show that noise in the BiCMOS rail-to-rail differential input Op-Amp is better than noise in CMOS rail-to-rail differential input Op-Amp. Finally, rail-to-rail instrumentation Amps are integrated by these two kinds of Op-Amp, and then they are simulated and compared again. The simulation and comparison results show that noise is significantly improved when using BiCMOS rail-to-rail differential input Op-Amps. In addition, this paper mentions the designed rail-to-rail instrumentation Amps could be applied as ECG Amplifier in the medical electronic. This paper also introduces what is ECG and ECG related electronics.