Fundamentals of Low-Noise in Analog Circuits

Low-noise is an important consideration in the application of electronic circuits and systems, because it provides a fundamental limitations to make useful signal input that can be propagate and processed in any electronic system. It is necessary to understand the sources of noise in circuits, how noise is described and how low-noise circuits may be designed and used for any system. This paper is an introductory tutorial that provides the principle knowledge of random noise in solid-state electronic circuits. It is treated as stationary noise methods and theory which are important to both continuous and discrete behavior of analog circuits. The basic sources of noise and its different types are discussed in this paper.