M niknejad and b boser 3 noise in amplifiers all

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Unformatted text preview: manufacturing process related” – flicker noise EECS 240 Lecture 5: Noise © 2006 A. M. Niknejad and B. Boser 3 Noise in Amplifiers • All electronic amplifiers generate noise. This noise originates from the random thermal motion of carriers and the discreteness of charge. • Noise signals are random and must be treated by statistical means. Even though we cannot predict the actual noise waveform, we can predict the statistics such as the mean (average) and variance. EECS 240 Lecture 5: Noise © 2006 A. M. Niknejad and B. Boser 4 Thermal Noise of a Resistor • Origin: Brownian Motion – Thermally agitated particles – E.g. ink in water, electrons in a conductor • Random use statistics to describe • Available noise power: PN = k BTB – Noise power...
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