mixed_signal_notes_set_8

# mixed_signal_notes_set_8 - ECE145C/218C notes M Rodwell...

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ECE145C /218C notes, M. Rodwell, copyrighted 2007 High Speed Mixed Signal IC Design notes set 8 Noise in Electrical Circuits: circuit noise analysis Mark Rodwell University of California, Santa Barbara [email protected] 805-893-3244, 805-893-3262 fax

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ECE145C /218C notes, M. Rodwell, copyrighted 2007 Noise in electrical circuits: topics Math: distributions, random variables, expectations, pairs of RV, joint distributions, mean, variance, covariance and correlations. Random processes, description, stationarity, ergodicity, correlation functions, autocorrelation function, power spectral density. Noise models of devices: thermal and "shot" noise. Models of resistors, diodes, transitors, antennas. Circuit noise analysis: network representation. Solution. Total output noise. Total input noise. 2 generator model. En/In model. Noise figure, noise temperature. Signal / noise ratio.
ECE145C /218C notes, M. Rodwell, copyrighted 2007 Noise in electrical circuits: Strategy shown. simply all here are steps key but the detail, more much provide notes noise ece594 The problem. any to extend then can one n, imaginatio much o Without to s. definition and methods analytical develop to this Use problem. meaningful possible simplest Work the limited. is here our time Again,

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ECE145C /218C notes, M. Rodwell, copyrighted 2007 Goal: Computing Signal/Noise Ratio and Sensitivity sin cos clock and data recovery clock and data recovery noise. referred - input equivalent the to magnitude signal input the compare to convenient often is It input. circuit decision at the ratio se signal/noi the find must we y, sensitivit receiver the compute To Receiver Optical Receiver Radio
ECE145C /218C notes, M. Rodwell, copyrighted 2007 Circuit noise analysis: Goals ( ) ? noise referred - output the calculate we do How / where , : s input term fictitious by d represente be can terms noise These load the and amplifier, the generator, the from arises Noise noise. and signal both has output circuit The output noise, input noise, input noise, output noise, load noise, amplifier noise, generator noise, output noise, output noise, v in v in v out in v out A V V V V A V V A V V V V V V V A V = + = + = + + = + =

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ECE145C /218C notes, M. Rodwell, copyrighted 2007 Noise model of this circuit fF 4 . 6 = cbx C fF 3.7 = cbi C = 49 bb R = 3 . 4 ex R = 6500 c R e b m V g ' e b V ' E B C = diff C fF 182 = je C fF 38 = π R 350 4kTRex 4kTRbb 2kT/gm or 2qIc 2kT/Rbb or 2qIb Icbo 2qIcbo 4kT/Rf Rf Rgen 4kTRgen Ree 4kTRee RL 4kTRL Vout Vin Vgen circuit. simple a very with ns calculatio illustrate will We . techniques efficient more learn will We analysis. hand for hard too are methods force - Brute . complexity formidable of is circuits practical most of analysis Noise . generators noise of number large a has circuit The
ECE145C /218C notes, M. Rodwell, copyrighted 2007 Circuit Noise Analysis: 1st Example (a) densities spectral based - Hz sided, - Single : Notation model. noise simplified with amplifier,

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## This note was uploaded on 12/29/2011 for the course ECE 594A taught by Professor Rodwell during the Fall '09 term at UCSB.

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mixed_signal_notes_set_8 - ECE145C/218C notes M Rodwell...

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