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9oc 2 in 4k btb r example r 1k b 1mhz eecs 240

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Unformatted text preview: aussian amplitude distribution (pdf) • Power spectral density “white” up to about 1/τ = 2π x 1000 GHz – kBT = 4 x 10-21 J (T = 290K = 16.9oC) • 2 in = 4k BTB R Example: R = 1kΩ, B = 1MHz EECS 240 Lecture 5: Noise 4µV rms or 4nA rms or 4nV/rt-Hz © 2006 A. M. Niknejad and B. Boser 7 Noise of Passive Networks • Capacitors, Inductors • Noise calculations – Instantaneous voltages add – Power spectral densities add – RMS voltages do NOT add • Example: R1+R2 in series • Generalization to arbitrary RLC networks EECS 240 Lecture 5: Noise © 2006 A. M. Niknejad and B. Boser 8 Noise in Diodes • Shot noise – – – – – • • Zero mean Gaussian pdf Power spectral density Proportional to current I...
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