Analysis of low-frequency noise reduction by autozero technique

8 November 1984

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 20 (23) , 959-960
https://doi.org/10.1049/el:19840652

Abstract

This letter analyses the low-frequency noise reduction produced by the autozero technique. A very simple model is established, and the output average power spectrum in the case of lowpass filtered white noise and 1/f noise is calculated. This analysis clearly shows the limitation to low-frequency noise reduction introduced by the foldover effect.

Keywords

OUTPUT AVERAGE POWER SPECTRUM
LOW-FREQUENCY NOISE REDUCTION
1/F NOISES
AUTOZERO TECHNIQUE
FOLDOVER EFFECT
LOWPASS FILTERED WHITE NOISE
CMO OPERATIONAL AMPLIFIER

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