Title
A True Rail-to-Rail Input and Output Amplifier
Author
Khandelwal, Shubham (TU Delft Electrical Engineering, Mathematics and Computer Science)
Contributor
Makinwa, Kofi (mentor)
Degree granting institution
Delft University of Technology
Programme
Electrical Engineering
Date
2019-10-31
Abstract
Operational amplifiers are basic building blocks of an analog system. As a system is only as good as its building blocks. There exists a constant need for developing a high-performance amplifier. Especially if they are configured as a buffer for analog front-end applications, as the system performance is highly dependent on the quality of input signal. Hence, they are critical for signal conditioning. This thesis presents a unity-gain stable operational amplifier for an ADC front-end application. The op-amp focuses on delivering high linearity with low noise and offset while driving a switched capacitor load. To accomplish this the op-amp employs Current Spillover, Chopping and Gain-Boosting techniques. The op-amp achieves THD of -108 dB at 10kHz, offset of 2.7 µV and input noise density of 19.3 nV/√Hz while consuming 504 µW; resulting in a NEF of 12.28. The op-amp is fabricated in 0.16 µm CMOS technology and occupies 0.1 mm2 area.
Subject
Rail-to-Rail
Buffer
chopping
Gain-boosting
Current Spillover
To reference this document use:
http://resolver.tudelft.nl/uuid:d8389fda-1c7e-40d6-870a-db944022c984
Embargo date
2024-10-31
Part of collection
Student theses
Document type
master thesis
Rights
© 2019 Shubham Khandelwal