An earlier Design Idea described how to linearize the output of an RTD (resistance-temperature-detector) sensor and how to calculate the resistor values using a spreadsheet (Reference 1). That idea ...

where: R RTD is the measured RTD resistance. V ADC is the ADC voltage reading. I CC is a somewhat constant-current source. V Offset is the voltage offset of cumulative errors. Note that this ...

The old saying “if it ain’t broke, don’t fix it” cautions against tampering with something that performs reliably and regularly proves its worth. Arguably, this advice applies to the circuit design ...

The sensors feature 100, 120, 500, and 1000Ω resistance values. Available temperature coefficients include 6180 ppm, suiting DIN 43760; 6370 ppm suiting, the HVAC curve; and 6720 ppm, suiting ANSI ...