An approximate noise computation for general integrator-based sc filters

Josef Goette; August Kaelin; Walter Guggenbühl; George S. Moschytz

doi:10.1109/31.99154

An approximate noise computation for general integrator-based sc filters

Josef Goette, August Kaelin, Walter Guggenbühl, George S. Moschytz

Swiss Federal Institute of Technology Zurich

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

An approximate measure for the noise performance of integrator-based SC-filters of general order n is developed. The measure is dependent only on SC-design parameters like capacitor ratios and capacitance levels, but not on technology-dependent parameters describing the switches and amplifiers. A simple and explicit closed-form expression for this approximate noise measure is derived and compared with more complex-and accurate-measures. The comparison demonstrates extraordinary accuracy for our approximate noise computation. An important application for our noise measure is in the optimization of integrator-based SC-fdters; it is used in the computer-aided design of sensitivity- and noise-optimized SC filters as described in the companion paper [1].

Original language	English
Pages (from-to)	1249-1254
Number of pages	6
Journal	IEEE Transactions on Circuits and Systems
Volume	38
Issue number	11
DOIs	https://doi.org/10.1109/31.99154
State	Published - Nov 1991
Externally published	Yes

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title = "An approximate noise computation for general integrator-based sc filters",

abstract = "An approximate measure for the noise performance of integrator-based SC-filters of general order n is developed. The measure is dependent only on SC-design parameters like capacitor ratios and capacitance levels, but not on technology-dependent parameters describing the switches and amplifiers. A simple and explicit closed-form expression for this approximate noise measure is derived and compared with more complex-and accurate-measures. The comparison demonstrates extraordinary accuracy for our approximate noise computation. An important application for our noise measure is in the optimization of integrator-based SC-fdters; it is used in the computer-aided design of sensitivity- and noise-optimized SC filters as described in the companion paper [1].",

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AB - An approximate measure for the noise performance of integrator-based SC-filters of general order n is developed. The measure is dependent only on SC-design parameters like capacitor ratios and capacitance levels, but not on technology-dependent parameters describing the switches and amplifiers. A simple and explicit closed-form expression for this approximate noise measure is derived and compared with more complex-and accurate-measures. The comparison demonstrates extraordinary accuracy for our approximate noise computation. An important application for our noise measure is in the optimization of integrator-based SC-fdters; it is used in the computer-aided design of sensitivity- and noise-optimized SC filters as described in the companion paper [1].

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An approximate noise computation for general integrator-based sc filters

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