Consejo Superior de Investigaciones Científicas · Centro Nacional de Microelectrónica
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El profesor de la Universidad de Sevilla e investigador del IMSE-CNM Ángel Rodríguez Vázquez ha sido nombrado Redactor Jefe de la revista International Journal of Circuit Theory and Applications.
Sistema telemétrico inalámbrico para la monitorización de magnitudes estáticas y dinámicas.
La Fundación General CSIC lanza la primera convocatoria de su Programa ComFuturo, un programa de colaboración público-privada que tiene por objeto dar respuesta al desempleo entre los jóvenes investigadores doctores.
Periodo de admisión de solicitudes: Hasta el 15/03/2015 a las 23:00h.
Aplicaciones Digitales y Soluciones de Medida con
6 Marzo 2015   IMSE-CNM
Dispositivo para la generación simultánea de identificadores y números verdaderamente aleatorios a partir de memorias de semiconductores (SRAMs).
♦ Visitas al IMSE
IES El Picacho.
11 Febrero 2015

Memoria IMSE-CNM 2011/2012
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75 aniversario del Consejo Superior de Investigaciones Científicas (CSIC)

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Últimas publicaciones
A Front-End ASIC for a 3-D Magnetometer for Space Applications by Using Anisotropic Magnetoresistors  »
This paper presents an application-specific integrated circuit (ASIC) aimed for an alternative design of a digital 3-D magnetometer for space applications, with a significant reduction in mass and volume while maintaining a high sensitivity. The proposed system uses magnetic field sensors based on anisotropic magnetoresistances and a rad-hard mixed-signal ASIC designed in a standard 0.35 μm CMOS technology. The ASIC performs sensor-signal conditioning and analogue-to-digital conversion, and handles calibration tasks, system configuration, and communication with the outside. The proposed system provides high sensitivity to low magnetic fields, down to 3 nT, while offering a small and reliable solution under extreme environmental conditions in terms of radiation and temperature.

Journal Paper - IEEE Transactions on Magnetics, vo. 51, no. 1, article 4001804, 2015
ISSN: 0018-9464
S. Sordo-Ibáñez, B. Piñero-García, M. Muñoz-Díaz,A. Ragel-Morales, J. Ceballos-Cáceres, L. Carranza-González, S. Espejo-Meana, A. Arias-Drake, J. Ramos-Martos, J.M. Mora-Gutiérrez and M.A. Lagos-Florido
Real-time single-exposure ROI-driven HDR adaptation based on focal-plane reconfiguration  »
This paper describes a prototype smart imager capable of adjusting the photo-integration time of multiple regions of interest concurrently, automatically and asynchronously with a single exposure period. The operation is supported by two intertwined photo-diodes at pixel level and two digital registers at the periphery of the pixel matrix. These registers divide the focal-plane into independent regions within which automatic concurrent adjustment of the integration time takes place. At pixel level, one of the photo-diodes senses the pixel value itself whereas the other, in collaboration with its counterparts in a particular ROI, senses the mean illumination of that ROI. Additional circuitry interconnecting both photo-diodes enables the asynchronous adjustment of the integration time for each ROI according to this sensed illumination. The sensor can be reconfigured on-the-fly according to the requirements of a vision algorithm.

Journal Paper - Proc. SPIE 9400, Real-Time Image and Video Processing 2015, 94000K

J. Fernández-Berni, R. Carmona-Galán, R. del Río, R. Kleihorst, W. Philips and Á. Rodríguez-Vázquez
A Procedure for Alternate Test Feature Design and Selection  »
This paper is a practical illustration of the adoption of alternate tests based upon the judicious selection of the set of parameters to be considered for design as well as to be observed subsequently. The notion of signatures is introduced, and their ability to predict design accuracy is analyzed. The application is demonstrated for an RF LNA circuit.

Journal Paper - IEEE Design & Test, vol. 32, no. 1, pp 18-25, 2015
ISSN: 2168-2356
M.J. Barragan and G. Leger
A 151 dB High Dynamic Range CMOS Image Sensor Chip Architecture With Tone Mapping Compression Embedded In-Pixel  »
This paper presents a high dynamic range CMOS image sensor that implements an in-pixel content-aware adaptive global tone mapping algorithm during image capture operation. The histogram of the previous frame of an auxiliary image, which contains time stamp information, is employed as an estimation of the probability of illuminations impinging pixels at the present frame. The compression function of illuminations, namely tone mapping curve, is calculated using this histogram. A QCIF resolution proof-of-concept prototype has been fabricated using a 0.35 μm opto-flavored standard technology. The sensor is capable of mapping scenes with a maximum intra-frame dynamic range of 151 dB (25 bits/pixel in linear representation) by compressing them to only 7 bits/pixel, while keeping visual quality in details and contrast. The in-pixel on-the-fly fully parallel tone mapping achieves high-frame rate allowing real-time high dynamic range video (120 dB at 30 frames/s).

Journal Paper - IEEE Sensors Journal, vol. 15, no. 1, pp 180-195, 2015
ISSN: 1530-437X
S. Vargas-Sierra, G. Liñán-Cembrano and A. Rodríguez-Vázquez
A fast readout electronic system for accurate spatial detection in ion beam tracking for the next generation of particle accelerators  »
This paper presents the design, implementation, and measurements of a complete electronic frontend intended for high-resolution spatial detection of ion beams at counting rates higher than 106 particles per second (p/s). The readout system is made up of three main multichannel building blocks, namely, a transimpedance preamplifier, a signal-conditioning line receiver, and a charge-to-digital converter, as well as some off-the-shelf components. The preamplifier and the line receiver have been specifically designed and optimized to minimize the overlapping probability of ion beams tracking, at high counting rates, in low-pressure gaseous secondary electron detectors. Experimental results are shown, considering α particles sources and particles beams, featuring an adaptive shaping time frame of 170-230 ns with a peak signal-to-noise ratio of up to 25 dB. These performance metrics are competitive with the state of the art, demonstrating the suitability of the reported data acquisition and instrumentation system for precise and fast particle tracking detection.

Journal Paper - IEEE Transactions on Instrumentation and Measurement, vol. 64 , no. 2, pp 318-327, 2015
ISSN: 0018-9456
A. Garzón-Camacho, B. Fernández, M.A.G. Álvarez, J. Ceballos and J.M. de la Rosa
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