Abstract
This paper presents a high unity gain bandwidth fully differential folded-cascode operational amplifier using gain-boosted technique. The amplifier is designed in TSMC 0.18μm 1P6M CMOS technology. The unity-gain bandwidth (GBW) and poles of the gain-boosting amplifiers were carefully designed to improve the stability. The implemented design provides a direct current (DC) gain of around 93 dB with a unity gain frequency of 1.8GHz. It exhibits a DC gain larger than 88dB when the output common-mode voltage between 0.6 V and 1.2V. the overall layout size is 96μm×120μm.
Publisher
Trans Tech Publications, Ltd.
Reference8 articles.
1. D.Y. Chang, U.K. Moon:, IEEE J. Solid-State Circuits, Vol. 38(2003), pp.1401-1404.
2. S. Limotyrakis. S, D. Kulchycki, D.K. Su, B. A. Wooley: IEEE J. Solid-State Circits, Vol. 40 (2005) , p.1057.
3. S. Li, Q. Yulin: In Electron Devices and Solid-State Circuits, IEEE Conference(2005), p.441.
4. K. Bult, G. Geelen: IEEE Journal of solid-State Circuits. Vol. 25(1990), p.1379.
5. K. Nagaraj, H. S. Fetterman: IEEE J. Solid-State Circuits. Vol. 32 (1990), p.3.