So I was kind of working on Steve Smith's sim vs. measurement question and thought I would step through some things,
Here is the input current noise for the 2018 model - I had some analysis options set in V11 that was messing this sim up, going back to default fixed the sim problem, the datasheet says 15pA for the V+ input and 20pA for the inverting input.
And then here is the input voltage noise, 1.77nV in sim vs. 1.7nV in the datasheet,
And then one more detail, is what temperature are the resistors set at, for some reason this file was at 0C, I changed the 2 R's to 25C, not sure I am doing this right?
I had the feedback R in the wrong spot, would not effect the input noise sims, here is the total output noise 18nV
If you put all these numbers into a ideal output noise calculator, I get 17.5nV, not sure why we are not exactly on? note we have to use the noise gain of 3 line here,
Anything look amiss here?
