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ktc noise

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6 - The Origin of Noise
from Part II - Noise and Electronic Interfaces
Marco Tartagni, University of Bologna
Book:

Electronic Sensor Design Principles

Published online:

23 December 2021

Print publication:

06 January 2022, pp 251-312
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Summary

Understanding the origin of noise is important because it gives hints on how to reduce its effects even from the electronic point of view. This chapter analyzes the physics background of some sources of random processes that are limiting sensing systems referred to as “thermal,” “shot,” and “flicker” noises. It also shows how thermal and shot noises are at the base of other observed electronic effects such as “kTC,” “phase,” and “current” noises. The discussion uses analogies between mechanical and electronic effects of thermal agitation. This is important not only for understanding the process but also to unify the model of noise in microelectromechanical sensor systems so as to use the same analysis framework.