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Title:Study of chopper stabilization in single ended amplifiers
Author(s):Malhotra, Chetna
Advisor(s):Hanumolu, Pavan K.
Department / Program:Electrical & Computer Eng
Discipline:Electrical & Computer Engr
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Chopper Stabilization
Operational Amplifier
Abstract:Chopper stabilization is one of the prominent techniques used to overcome low-frequency noise and DC offset errors in CMOS amplifiers. This thesis presents a detailed analysis of this approach. The fundamentals of chopping, followed by the design and underlying tradeoffs of a chopper stabilized amplifier, are included. A chopper stabilized, single ended amplifier in closed loop unity gain configuration is designed using the folded cascode topology in 180 nm CMOS process. This design is verified for functionality by a thorough comparison with its non-stabilized counterpart. Simulation results, including the benefits obtained in terms of reduced flicker noise and an amplified output voltage independent of input DC offsets, are discussed.
Issue Date:2019-11-15
Rights Information:Copyright 2019 Chetna Malhotra
Date Available in IDEALS:2020-03-02
Date Deposited:2019-12

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