I'm looking at the temp sensor project and wondering what I would need to do to read from a sensor which outputs a range 0 to 20.0 mV?

Can anyone suggest anything please?

Thank you!

Hi Wobbler,

My recommendation would be to amplify those voltages before reading them with an analog-to-digital converter. Our digital strain gauge tutorial showed us using an AD620 instrumentation amplifier to read a tiny (maybe 5 or 10mV full-scale) voltage.

With a small signal like that, you also need to be aware of "input offset error" in any amplifiers or other components in your signal chain. (FET-based op-amps tend to have higher input offset error, sometimes in the tens of millivolts.)

Does that help get you pointed in the right direction?

Mike

It does! Thank you. :o)