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A low-voltage, compact and fast circuit for sorting currents is reported. It is based on an enhanced four-transistor (4-T) min-max CMOS switch to reduce the switch voltage drop. The inherent avoidance of mirroring that produces mismatch is extended to the whole sorting circuit, while keeping the voltage drop to very low levels. The sorted output currents are by construction equal to the input currents,...
A configurable sigma-delta (SigmaDelta) modulator for sensor-conditioning applications is presented. The architecture allows the configuration of low-pass and band-pass modulators of different orders and topologies. The gains in all the stages are programmable permitting the adaptability of the circuit to different input signals and, therefore, facilitating the evaluation of MEMS and sensor prototypes...
A method for controlling position, damping and inertia in parallel-plate electrostatic actuators is proposed. This method overcomes the pull-in effect and the limitations produced by the parasitic capacitances without requiring any additional electrodes or position sensors. It forces the actuator to behave like a linear second-order system with full control of the dynamics, being able to electronically...
In this paper we show a low power and very compact VLSI implementation of a FitzHugh-Nagumo neuron for large network implementations. The circuit consists of only 17 small transistors and two capacitors and consumes less than 23 muW. It is composed of a nonlinear resistor and a lossy active inductor. We demonstrate that a simple low Q active inductor can be used instead of a complex one because the...
This letter describes the design and implementation of a synchronizable compact CMOS oscillator. By using a fully differential topology, a reduction in area occupancy together with an improved robustness in front of on-chip interferences is achieved. Post-layout simulation results and experimental results for a standard CMOS 0.35 μ m technology are presented to validate the functionality of the tunable...
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