Cyclostationarity-based model for noise analysis of charge amplification with correlated double sampling

A cyclostationarity-based analytical model for noise analysis of charge amplification with correlated double sampling (CDS) is proposed. It is established by signal description and transformation with considerations of input referred noise sources. It predicts that CDS operation has different noise...

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Bibliographic Details
Published in:Analog integrated circuits and signal processing 2010-12, Vol.65 (3), p.407-413
Main Authors: Pittet, P., Lu, G.-N., Quiquerez, L., Chateaux, J.-F.
Format: Article
Language:English
Subjects:
Amplification
Charge
Circuits and Systems
Correlation analysis
Electrical Engineering
Engineering
Engineering Sciences
Mathematical models
Noise
Sampling
Signal,Image and Speech Processing
Temporal logic
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Summary:A cyclostationarity-based analytical model for noise analysis of charge amplification with correlated double sampling (CDS) is proposed. It is established by signal description and transformation with considerations of input referred noise sources. It predicts that CDS operation has different noise effects: it suppresses reset noise and attenuates 1/ f noise from the equivalent input noise voltage, but it has no noise-reduction effect on the input referred noise current. Parametrical analysis can also be performed by using this model. For example, by varying integration duration, the signal-to-noise ratio (SNR) will first be proportional to t int , then to t int ½ , and finally limited by the 1/ f noise component becoming predominant. This proposed model is validated by comparison of analysis results with those from temporal noise analysis using SpectreRF of Cadence™ CAD tool. Unlike time-hungry temporal noise analysis, this model provides rapid results.
ISSN:0925-1030
1573-1979
DOI:10.1007/s10470-009-9399-2