♦ Defensa de Trabajos Fin de Máster
Efecto de Single Event Transients (SET) en moduladores sigma-delta.
IMSE-CNM 18 Julio 2014
Test y demostrador de circuitos integrados de control de IGBTs para topologías de potencia en vehículos eléctricos.
José J. Padilla.
IMSE-CNM 18 Julio 2014
♦ Visitas al IMSE
Escuela Politécnica Superior. Universidad de Sevilla.
16 Julio 2014
Se buscan candidatos para un contrato predoctoral para realizar una tesis doctoral en el área de Tecnología Electrónica y de Comunicaciones asociada al Proyecto de Investigación: Aproximación multinivel al diseño orientado a la fiabilidad de circuitos integrados analógicos y digitales.
Conferencias impartidas en el IMSE-CNM y la Universidad de Sevilla por la profesora Rahma Abdaoui del ISEP (Institut supérieur d'electronique de Paris), dentro del Programa de Movilidad Erasmus para profesores:Body sensor area networks: Definition, state-of-the-art, performances, limitations and perspectives.
The 60 GHz band: A new promising solution for distance monitoring systems.
IMSE-CNM y US 23-24 Junio 2014
Enhanced event-based stereo vision with Gabor filters »
The recently developed Dynamic Vision Sensors (DVS) sense dynamic visual information asynchronously and code it into trains of events with sub-micro second temporal resolution. This high temporal precision makes the output of these sensors especially suited for dynamic 3D visual reconstruction, by matching corresponding events generated by two different sensors in a stereo setup. This paper explores the use of Gabor filters to extract information about the orientation of the object edges that produce the events, applying the matching algorithm to the events generated by the Gabor filters and not to those produced by the DVS. This strategy provides more reliably matched pairs of events, improving the final 3D reconstruction.
Conference Paper -
Conference on Design of Circuits and Integrated Systems DCIS 2014
L.A. Camuñas-Mesa, T. Serrano-Gotarredona, S.H. Ieng, R. Benosman and B. Linares-Barranco
Automated generation of the optimal performance trade-offs of integrated inductors »
In this paper, a new methodology for the automated generation of the optimal performance trade-offs of integrated inductors is presented. The methodology combines a multiobjective optimization algorithm with electromagnetic simulation to get highly accurate results. A set of sized inductors is obtained showing the best performance trade-offs for a given technology. Unlike reported approaches for inductor synthesis, performance trade-offs are generated offline, i.e., before any specific inductance or quality factor are required. The tight efficiency versus accuracy trade-off of existing approaches is, in this way, avoided and performance evaluation via electromagnetic simulation becomes affordable.
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, vol. 33, no. 8, pp. 1269-1273, 2014
DOI: 10.1109/TCAD.2014.2316092 » doi
R. González-Echevarría, R. Castro-López, E. Roca, F.V. Fernández, J. Sieiro, N.Vidal and J.M. López-Villegas
Review of ADCs for imaging »
The aim of this article is to guide image sensors designers to optimize the analog-to-digital conversion of pixel outputs. The most common ADCs topologies for image sensors are presented and discussed. The ADCs specific requirements for these sensors are analyzed and quantified. Finally, we present relevant recent contributions of specific ADCs for image sensors and we compare them using a novel FOM.
Conference Paper -
Image Sensors and Imaging Systems 2014
J.A. Leñero-Bardallo, J. Fernández-Berni and Á. Rodríguez-Vázquez
Monolithic integration of Giant Magnetoresistance (GMR) devices onto standard processed CMOS dies »
Giant Magnetoresistance (GMR) based technology is nowadays the preferred option for low magnetic fields sensing in disciplines such as biotechnology or microelectronics. Their compatibility with standard CMOS processes is currently investigated as a key point for the development of novel applications, requiring compact electronic readout. In this paper, such compatibility has been experimentally studied with two particular non-dedicated CMOS standards: 0.35 μm from AMS (Austria MicroSystems) and 2.5 μm from CNM (Centre Nacional de Microelectrònica, Barcelona) as representative examples. GMR test devices have been designed and fabricated onto processed chips from both technologies. In order to evaluate so obtained devices, an extended characterization has been carried out including DC magnetic measurements and noise analysis. Moreover, a 2D-FEM (Finite Element Method) model, including the dependence of the GMR device resistance with the magnetic field, has been also developed and simulated. Its potential use as electric current sensors at the integrated circuit level has also been demonstrated.
Microelectronics Journal, vol. 45, no. 6, pp 702-707, 2014
DOI: 10.1016/j.mejo.2014.03.015 » doi
M.-D. Cubells-Beltrán, C. Reig, A. de Marcellis, E. Figueras, A. Yúfera, B. Zadov, E. Paperno, S. Cardoso and P.P. Freitas
Four-channel self-compensating single-slope ADC for space environments »
A multichannel high-resolution single-slope analogue-to-digital converter (SS ADC) is presented that automatically compensates for process, voltage and temperature variations, as well as for radiation effects, in order to be used in extreme environmental conditions. The design combines an efficient implementation by using a feedback loop that ensures an inherently monotonic and very accurate ramp generation, with high levels of configurability in terms of resolution and conversion rate, as well as input voltage range. The SS ADC was designed in a standard 0.35 μm CMOS technology. Experimental measurements of the performance and stability against radiation and temperature are presented to verify the proposed approach.
Electronics Letters, vol. 50, no.8, pp 579-581, 2014
INSTITUTION OF ENGINEERING AND TECHNOLOGY-IET
DOI: 10.1049/el.2014.0664 » doi
S. Sordo-Ibáñez, S. Espejo-Meana, B. Piñero-García, A. Ragel-Morales, J. Ceballos-Cáceres, M. Muñoz-Díaz, L. Carranza-González, A. Arias-Drake, J.M. Mora-Gutiérrez, M.A. Lagos-Florido and J. Ramos-Martos