Guillermo Zatorre

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In this paper a new auto-tuning digital technique is reported for continuous-time filters over VHF applications, based on phase detector. By using a 0.35 μm digital CMOS process, changes in frequency response of a 3thr-order low pass filter can be tuned with a 3.1% error over the designed value. This technique confirms the feasibility of the proposed scheme(More)
This work presents two current-mode integrated circuits designed for sensor signal preprocessing in embedded systems. The proposed circuits have been designed to provide good signal transfer and fulfill their function, while minimizing the load effects due to building complex conditioning architectures. The processing architecture based on the proposed(More)
The design, analysis, and system simulation of an adaptive processor based on a current-mode mixed analog-digital circuit is presented. The processor consists of a mixed four-quadrant multiplier and a current conveyor that performs the nonlinearity. Schematics, circuit parameters, and a high-level model are shown. The results achieved when applying this(More)
This paper presents a study of mismatch effects in a digitally programmable analogue processor designed for small embedded applications. Circuit programmability allows for its adaptation to deviations in circuit operation or environmental effects. Starting from circuit simulation data, the system-level operation is modelled, showing its robustness to(More)
Sensor non-linearities, ageing, temperature changes the preceding neuron layer outputs. When size, power and other physical dependences force to include conditioning consumption and speed are main requirements, electronic circuits in electronic measurement and control systems. This analogue implementation is a suitable selection [3] [4] [5]. paper shows an(More)
This paper shows a digitally tunable analogue processing architecture based on an adaptive circuit. The conditioning circuit has been designed to extend the linear range of an angular position sensor, compensating the output drift due to temperature variations. System-level simulations give a temperature-independent linear output in the range of 293-353 K,(More)
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