That's annoying! : ) It might be worth plugging the values into the formula to see if the difference is easy enough to spot through a measurement or not.
I was under the impression (I have not read up on it for ages) that the model [edit: I'm incorrect, I was thinking of Steinhart-Hart which is the super accurate model] was extremely accurate (less than hundredths of a degree), so this is surprising. It may be that Molex have published a generic table maybe : ( Although if their products have a beta value variation within a sample of them, maybe they have used typical values, which is a bit bizarre since they could have simply shown a chart with typical beta value! But I don't really understand the accuracy-specifying world nor statistics to a decent level, and I could be talking complete nonsense..
Sorry - I did speak complete rubbish earlier : ) It's the Steinhart-Hart which is ultra-accurate (hundredths of a degree or smaller). Personally I'd trust that over the Molex chart! : ) But again, I could be speaking more rubbish : )
Depending on the requirement, it could be pre-calculated if there's sufficient Flash, i.e. just store the value every tenth of a degree or something, and then interpolate between them. I'm sure you know all that anyway, just for the benefit of others.
I don't know if any information there is useful. I recall quite a few bits of ADC resolution are saved if the resistor (if it's in a potential divider circuit) is sized just right for a desired limited range, and my maths certainly isn't good enough to calculate such a thing, so I just let Matlab run a few different attempts.
