Hi Mihai,
many thanks for your prompt answer. I will see wether the enable logic is positiv or negativ. Here is the input output logic table, can you see if its compatible with the ARM outputs? I must calibrate the opamp and the thermosensor with the poti, when I have both to test I hope I can take two fixed resistors. The temperature range is to 150 °C.
LogicIRAMX.jpg
Hans