I hoped for 10fA. 0.1fA would be golden.
>
>OK, I give up. How? And how much thermal drift? Over what voltage range?
>And what about cmmr? How much INL? What happens with ESD?
>
>Doesn't help much if it needs -273C to run, and normal body capacitance
>blows the inputs.
>
>How to do this? Enquiring mind wants to know:)
Buy one of these:
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or build something along these lines:
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