期刊名称：International Journal on Electrical Engineering and Informatics
印刷版ISSN：2085-6830
出版年度：2019
卷号：11
期号：4
页码：733-746
DOI：10.15676/ijeei.2019.11.4.7
出版社：School of Electrical Engineering and Informatics
摘要：This paper presents the design of a high performance Regulated TelescopicOperational Transconductance Amplifier (OTA) for low power and high speed sigma-deltamodulator for Mobile WiMAX Applications. Indeed, the Regulated Telescopic OTA is anenhanced DC gain Telescopic circuit with the gate voltage of the cascode transistor iscontrolled by a feedback amplifier. An algorithmic driven methodology is developed ending tothe optimal transistor geometries. Moreover, the proposed OTA was post-layout simulated forsome process corners, temperature variation and Monte-Carlo analysis. The post-layoutsimulation results have achieved a DC gain of 66dB, a large GBW of 862MHz with a phasemargin of 58degrees with only 6.24mW power consumption. In addition, the use of a robustBisquare Weights (BW) method is investigated to predict the Regulated Telescopic OTAperformance for new generation systems. Then, the impact of Nanometer CMOS on RegulatedTelescopic OTA design is highlighted. It shows the potentialities of future CMOS processes toprovide high speed and high performance OTA circuit.
关键词：Regulated Telescopic OTA design; Heuristic optimization; DC gain; Bisquare;Weights method; nanometer CMOS; predicted OTA performance
