P. Malcovati, M. Grassi, F. Borghetti, V. Ferragina, A. Baschirotto
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引用次数: 5
Abstract
In this paper we present the design and testing of an integrated wide-range interface for resistive sensors. The ASIC consists of a multi-scale trans-resistance continuous time amplifier (programmed by selecting a feedback resistor from an array), followed by a 13-bit incremental A/D converter. After calibration, employed to cancel offset and gain error mismatch between scales, the device shows a worst case error in the resistance value measurement of about 0.1% over a range of more than 5 decades [100Omega-20MOmega]
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