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AD7792  RTD 2 wires measurement

Question asked by glias on Dec 22, 2011
Latest reply on Dec 28, 2011 by MaryMc

Hello,

I would want to use the AD7792 with a RTD (1000 ohms) with only 2 wires. The datasheet only mention 3 wires topology, is it possible to adapt it to my application ? Can I use the precision resistor to create the voltage reference of the ADC (by connecting the ? or do I better put an external voltage reference and put the second RTD wire to the ground ?

 

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