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POWER SUPPLY NOISE REDUCTION USING ACTIVE RESISTORS



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Carnegie Mellon University CARNEGIE INSTITUTE OF TECHNOLOGY THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTEROF SCIENCE POWER SUPPLY NOISE REDUCTION USING ACTIVE RESISTORS GOK E KESKiN ACCEPTED BY THE DEPARTMENTOF ELECTRICAL AND COMPUTERENGINEERING REVIEWED BY DATE DATE Acknowledgements I am thankful to mythesis advisor Larry Pileggi for providing megreat guidance during the course of this project His full support and encouragementhave madethis work possible He has been a constant inspiration for meduringthe difficult times of the project I wouldalso like to thank KenMaiand Patrick Yuefor their help during the fabrication of the test chip and excellent advice on the problemsI encountered I amparticularly grateful to Xin Li for his extremelyvaluable contributions starting from the first day of this project I have learnt a lot from him including identifying problemsand finding waysto solve them Contributions of Marija Ilic and Aleksandar Veselinovic during the early exploration stages of this project have also been very valuable I owe manythanks to Jaejin Park KihwaChoi and Hasan Akyol who have helped me in various stages of the project I have to acknowledgethe great moral support of myfriends at Carnegie Mellon UmutArslan Hasan Akyol Rohan Batra Ahmet Gtirkan l epni Volkan Ediz Thiago Hersan WessamHassanein Koushik Niyogi Jonathan Proesel and Aleksandar Veselinovic have mademy stay enjoyable during this time Most importantly I owe great thanks to my family Without them I would not be here today I am grateful to mygrandmother mother father sister and brother in law for being the meaningof my life 2 Table of contents Abstract 4 1 Introduction 5 2 Background 8 2 1Decoupling Capacitance 8 2 2Resistive Damping 11 2 3Analysis 12 3 ActiveResistorsfor NoiseReduction 16 3 1Concept 16 3 2Simulation Setup andResults 21 3 3Testing 27 4 Conclusions 30 5 References 31 Abstract Withthe reduction of supply voltages in today s integrated circuits



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