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Contribution a l'optimisation des memoires analogiques rapides et bas bruit dans les technologies submicroniques. Application aux chaines d'acquisition des trajectometres de la physique des particules

Abstract : High-energy physics experiments need continuous data acquisition in analog memories done by several thousands of memory cells. A memory cell is analogous to a sample and hold structure. Constraints imposed by the severe environment are drastic. A trade-off between area, accuracy, speed and power dissipation have to be found. The study can be generalized to instrumental systems for which non-linearity is a major limitation to their integration. The present work presents a non-linearity quantitative analysis for voltage and current modes. In order to determine the ultimate accuracy we can reach with a minimum architecture, polynomial models have been developed from components large signal equations. Coefficients analysis has led to the determination of influence parameters related to cell components. The models have been confronted to simulation results and a prototype circuit has been designed in a 0.25 um technology. A 12 bits resolution can be easily obtained with a voltage mode cell whereas a 9 bits resolution is obtained in current mode. It is shown that the voltage mode is more sensitive to the technology parameters. Switched-current mode appears like an interesting alternative to design accurate analog memories in deeper technologies. A full description of models development and their exploitation are given in this thesis.
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https://tel.archives-ouvertes.fr/tel-00006340
Contributor : Florent Vautrin <>
Submitted on : Tuesday, June 29, 2004 - 4:05:31 PM
Last modification on : Thursday, April 23, 2020 - 2:26:30 PM
Long-term archiving on: : Friday, April 2, 2010 - 7:59:11 PM

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Florent Vautrin. Contribution a l'optimisation des memoires analogiques rapides et bas bruit dans les technologies submicroniques. Application aux chaines d'acquisition des trajectometres de la physique des particules. Micro et nanotechnologies/Microélectronique. Université Louis Pasteur - Strasbourg I, 2000. Français. ⟨tel-00006340⟩

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