A power efficient and simple scheme for dynamically biasing cascode amplifiers and telescopic op-amps

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• 作者：Jaime Ramí ; rez-Angulo ; Milind Sawant ; Antonio Lopez-Martin ; Ramon G. Carvajal
• 关键词：CMOS analog integrated circuits ; Low voltage analog circuits ; Operational amplifiers
• 刊名：Integration ; the VLSI Journal
• 出版年：2008
• 期刊代码：71_01679260
• 类别：et
• 出版时间：July 2008
• 卷：41
• 期：4
• 页码：539-543
• 文件大小：699 K

摘要

A simple dynamic biasing scheme to extend the input/output range of cascode amplifiers is introduced. It requires minimum extra hardware and no additional power consumption. A dynamic biased telescopic op-amp is discussed as an application example. Experimental results of a fabricated test chip in 0.5 μm CMOS technology are presented that verify the proposed technique.