Now showing items 1-20 of 27

  • AER-SRT: scalable spike distribution by means of synchronous serial ring topology address event representation 

    Dorta Pérez, Silvestre Taho; Zapata Rodríguez, Mireya; Madrenas Boadas, Jordi; Sánchez Rivera, Giovanny (2016-01-01)
    Article
    Open Access
    Given the massive number of interconnects in Spiking Neural Networks (SNNs), distributing spikes effciently becomes a critical issue for the efficient hardware emulation of large-scale SNNs. In this work, the AER-SRT ...
  • An asynchronous finite-state-machine-based buck-boost converter for on-chip adaptive power supply 

    Fernández, Daniel; Madrenas Boadas, Jordi; Alarcón Cot, Eduardo José (2013-01)
    Article
    Restricted access - publisher's policy
    In this paper we present an asynchronous finite-state machine digital controller co-integrated with an on-chip non-inverting buck-boost power converter with dynamic signal-tracking capabilities. The mostly-digital controller ...
  • A self-test and dynamics characterization circuit for MEMS electrostatic actuators 

    Fernández Martínez, Daniel; Madrenas Boadas, Jordi; Cosp Vilella, Jordi (2011-03)
    Article
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    This paper presents a high-bandwidth capacitance estimation and driving circuit especially tailored for its use with MEMS electrostatic actuators. The circuit can be integrated as a part of a system comprising an electrostatic ...
  • A translinear, log-domain FPAA on standard CMOS technology 

    Fernández, Daniel; Martínez Alvarado, Luis Arturo; Madrenas Boadas, Jordi (2012-02)
    Article
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    A field-programmable analog array (FPAA) using a standard-CMOS wide-dynamic-range translinear element (TE) is introduced. The FPAA configurable analog blocks (CABs) are based on a reconfigurable translinear cell (RTC), ...
  • Bioinspired sensory integration for environment-perception embedded systems 

    Madrenas Boadas, Jordi; Fernández Martínez, Daniel; Cosp Vilella, Jordi; Moreno Aróstegui, Juan Manuel; Martínez Alvarado, Luis Arturo; Sánchez Rivera, Giovanny (2011)
    Conference report
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    In this work, the architecture of a system intended for bioinspired environment perception is described. Considering the technology trends and applications requirements, the properties of such a system are discussed. ...
  • Characterization of CMOS-MEMS resonant pressure sensors 

    Banerji, Saoni; Fernández Martínez, Daniel; Madrenas Boadas, Jordi (2017-08-30)
    Article
    Open Access
    IEEE Comprehensive characterization results of a CMOS-MEMS resonant pressure sensor are presented. We have extensively evaluated the key performance parameters of our device in terms of quality factor (Q) variations under ...
  • CMOS BEOL-embedded z-axis accelerometer 

    Michalik, Piotr Jozef; Sánchez Chiva, José María; Fernández Martínez, Daniel; Madrenas Boadas, Jordi (Institution of Electrical Engineers, 2015-05-28)
    Article
    Open Access
    A first reported complementary metal-oxide semiconductor (CMOS)-integrated acceleration sensor obtained through isotropic inter-metal dielectric (IMD) etching of a back-end-of-line (BEOL) integrated circuit interconnection ...
  • CMOS-MEMS resonant pressure sensors: optimization and validation through comparative analysis 

    Banerji, Saoni; Michalik, Piotr Jozef; Méndez Fernández, Daniel; Madrenas Boadas, Jordi; Mola, Albert; Montanyà, Josep (2017-09-01)
    Article
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    An optimized CMOS-MEMS resonant pressure sensor with enhanced sensitivity at atmospheric pressure has been reported in this paper. The presented work reports modeling and characterization of a resonant pressure sensor, ...
  • Continuous-time CMOS adaptive asynchronous sigma-delta modulator approximating low-fs low-inband-error on-chip wideband power amplifier 

    Alarcón Cot, Eduardo José; Fernández, Diego; García Tormo, Albert; Madrenas Boadas, Jordi; Poveda López, Alberto (IEEE, 2011)
    Conference report
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    A mixed-signal continuous-time-processing standard CMOS implementation of an asynchronous sigma-delta modulator aimed to drive a switching amplifier operating as an on-chip wideband adaptive power supply is presented in ...
  • Curvature of BEOL cantilevers in CMOS-MEMS processes 

    Valle, Juan José; Fernández Martínez, Daniel; Madrenas Boadas, Jordi; Barrachina, Laura (2017-08-01)
    Article
    Open Access
    This paper presents the curvature characterization results of released back-end-of-line 5 µm-wide cantilevers for two different 0.18-µm 1P6M complementary metal-oxide semiconductor microelectromechanical systems processes. ...
  • Giant Magnetoresistance (GMR) sensors for 0.35µm CMOS technology sub-mA current sensing 

    De Marcellis, A.; Reig, C; Cubells Beltrán, M. Dolores; Madrenas Boadas, Jordi; Cardoso, F; Cardoso, S.; Freitas, P.P (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
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    This paper reports on the design and fabrication of microelectronic structures for non-invasive indirect electric current sensing at the IC level. A 0.35 ¿m CMOS ASIC has been specifically developed for this purpose. Then, ...
  • Integration of GMR sensors with different technologies 

    Cubells Beltrán, M. Dolores; Reig Escriva, Abilio Càndid; Madrenas Boadas, Jordi; De Marcellis, A.; Santos, Joana; Cardoso, Susana; Freitas, P.P. (2016-06-01)
    Article
    Open Access
    Less than thirty years after the giant magnetoresistance (GMR) effect was described, GMR sensors are the preferred choice in many applications demanding the measurement of low magnetic fields in small volumes. This rapid ...
  • JubiTool: Unified design flow for the perplexus SIMD hardware accelerator 

    Robert, M.; Volken, H.; Brousse, O.; Guillot, J.; Gil, T.; Grize, F.; Sassatelli, G.; Moreno Aróstegui, Juan Manuel; Madrenas Boadas, Jordi; Villa, A. (IEEE Computer Society Publications, 2009)
    Conference report
    Open Access
    This paper presents a new unified design flow developed within the Perplexus project that aims to accelerate parallelizable data-intensive applications in the context of ubiquitous computing. This contribution relies ...
  • LCMOS: Light-powered standard CMOS circuits 

    Madrenas Boadas, Jordi; Fernández Martínez, Daniel; Wang, Chunyan (2012)
    Conference report
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    LCMOS, a harvest-use light-powered scheme for standard CMOS circuits based on photogenerated currents in the drain-substrate PN junction of both PMOS and NMOS transistors is introduced. PMOS and NMOS bulks are ...
  • Optimization of parameters for CMOS MEMS resonant pressure sensors 

    Banerji, Saoni; Madrenas Boadas, Jordi; Fernández Martínez, Daniel (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
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    Micro machined resonant pressure sensors have rapidly grown into a major type of MEMS products over the past two decades. This paper presents the mathematical modelling of squeeze film damping in a MEMS resonant pressure ...
  • Performance evaluation and scaling of a multiprocessor architecture emulating complex SNN algorithms 

    Sánchez Rivera, Giovanny; Madrenas Boadas, Jordi; Moreno Aróstegui, Juan Manuel (Springer Verlag, 2010-09)
    Article
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    The performance analysis of an efficient multiprocessor architecture that allows accelerating the emulation of large-scale Spiking Neural Networks (SNNs) is reported. After describing the architecture and the complex SNN ...
  • Pulsed digital oscillators for electrostatic MEMS 

    Gorreta Mariné, Sergio; Ruiz Fernández, Daniel; Blokhina, Elena; Pons Nin, Joan; Jimenez Serres, Vicente; O'Connell, D.; Feely, Orla; Madrenas Boadas, Jordi; Domínguez Pumar, Manuel (2012)
    Article
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    This paper introduces a new actuation scheme for implementing Pulsed Digital Oscillators (PDOs) for electrostatic MEMS resonators. In this scheme, the capacitance of the device is biased with a voltage and it is periodically ...
  • Quasi-digital conversion for resistive devices: application in GMR-based IC current sensors 

    Reig, C.; Cubells, Miquel; De Marcellis, A.; Madrenas Boadas, Jordi; Cardoso, S.; Freitas, P.P. (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
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    Resistive devices, including sensors, are used in a huge range of applications within different scenarios. When a complete system is considered, a quasi-digital output is often recommendable. If the conversion is operated ...
  • Quasi-digital front-ends for current measurement in integrated circuits with giant magnetoresistance technology 

    De Marcellis, A.; Cubells Beltrán, M. Dolores; Reig Escriva, Abilio Càndid; Madrenas Boadas, Jordi; zadov, Boris; Paperno, Eugene; Cardoso, S.; Freitas, P.P. (2014-07-01)
    Article
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    In this study, the authors report on two different electronic interfaces for low-power integrated circuits electric current monitoring through current-to-frequency (I-f) conversion schemes. This proposal displays the ...
  • Result-consistent counter sampling scheme for coarse-fine TDCs 

    Michalik, Piotr Jozef; Fernandez, D.; Madrenas Boadas, Jordi (Institution of Electrical Engineers, 2012-09-13)
    Article
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