I want to dedicate this work to my parents and sister for their continuous guidance, encouragement, prayers, love and support throughout my life. I would like to thank Anand k Chamakura, my fellow M.S. student without whose help I would still be toiling trying to solve some complex design problems. I would like to thank all my friends especially Inhyouk Song, Tinghui Xin, Kopparthi Sunitha, Yernagula Jagdish, Ripan Das and Chuang Zhang for their helpful discussions and suggestions. There are

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... ntless other people whose names and faces pass through my mind as I ruminate about this period at LSU. So, I would have to include all of them saying that it was really a pleasure knowing them and that aspect, as much as anything else, made this whole journey worthwhile. My gratitude to the Department of Electrical and Computer Engineering for providing partial support to me throughout my stay at LSU as teaching assistant. Last, but not the least, I gratefully acknowledge the partial support as research assistant, from the NSF and Louisiana Board of Regents through the EPSCoR research grant # 0092001. C.1: CMOS operational amplifier circuit diagram .......................................... D.1: Block diagram of the experimental set .................................................