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Analysis of low-frequency noise reduction by autozero technique

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1 Author(s)
Enz, C. ; Swiss Federal Institute of Technology, Electronics Laboratory, Lausanne, Switzerland

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.

Published in:

Electronics Letters  (Volume:20 ,  Issue: 23 )