Abstract
A resistance deviation-to-time interval converter based on dual-slope integration using second generation current conveyors (CCIIs) is designed for connecting resistive bridge sensors with a digital system. It consists of a differential integrator using CCIIs, a voltage comparator, and a digital control logic for controlling four analog switches. Experimental results exhibit that a conversion sensitivity amounts to <TEX>$15.56{\mu}s/{\Omega}$</TEX> over the resistance deviation range of <TEX>$0-200{\Omega}$</TEX> and its linearity error is less than <TEX>${\pm}0.02%$</TEX>. Its temperature stability is less than <TEX>$220ppm/^{\circ}C$</TEX> in the temperature range of <TEX>$-25-85^{\circ}C$</TEX>. Power dissipation of the converter is 60.2 mW.
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