The MAX31865 is an easy-to-use resistance-to-digitalconverter optimized for platinum resistance temperaturedetectors (RTDs). An external resistor sets the sensitivityfor the RTD being used and a precision delta-sigma ADCconverts the ratio of the RTD resistance to the referenceresistance into digital form. The MAX31865’s inputs areprotected against overvoltage faults as large as Q50V.Programmable detection of RTD and cable open andshort conditions is included.
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