Direction de recherche : Hassan ABOUSHADY

Co-encadrement : GREINER Alain

Conversion analogique-numerique Basse-Consommation pour Micro-Capteurs

In the context of an analog front end for a high-density memory composed of Micro-Electro-Mechanical Structures (MEMS) micro-cantilevers, there are severe constraints on the area and power consumption of the analog-to-digital converter. In this work, several ADC architectures targeting 7bits of resolution and 50kHz of bandwidth while occupying an active area less than 0.1mm2 and a power consumption less than 200uW, have been investigated. A Switched-Capacitor Sigma-Delta, a Continuous-Time Sigma-Delta and a Cyclic ADC have been designed, fabricated and measured. Systematic design procedure for the circuit synthesis and the automatic layout generation of a low-power ADC has been developed in the CAIRO+ analog design automation environment.

Publications 2003-2013

• 2013
  • J. Bonan, Ch. Hagleitner, H. Aboushady, M.‑M. Louërat : “Compact and Low power ADCs for a MEMs-based Probe Storage Device”, Analog Integrated Circuits and Signal Processing, vol. 76 (1), pp. 23-34, (Springer Verlag) (2013)
• 2008
  • J. Bonan : “Conversion analogique-numerique Basse-Consommation pour Micro-Capteurs”, soutenance de thèse, soutenance 29/09/2008, direction de recherche Aboushady, Hassan, co-encadrement : Greiner, Alain (2008)
• 2006
  • J. Bonan, Ch. Hagleitner, H. Aboushady : “Low-Power Cell-Level ADC for a MEMS-Based Parallel Scanning-Probe Storage Device”, ESSCIRC European Solid-State Circuits Conference, Montreux, Switzerland, pp. 239-242, (IEEE) (2006)
• 2003
  • J. Bonan, H. Aboushady, M.‑M. Rosset‑Louërat : “A 3mW, 250 MSamples/sec, 4-bit Current Mode FLASH Analog-to-Digital Converter”, MidWest Symposium on Circuits And Systems 2003 (MWSCAS'03), vol. 1, Le Caire, Egypt, pp. 1-4, (IEEE) (2003)