Michael Watterson wrote:
> There are loads of different datasheets and parts. Some don't quote
> any tolerance other than overall, not differential.

Right, so those obviously don't guarantee tighter relative specs than
absolute.  Some arrays are meant for exactly this kind of application and do
spec relative tolerance and relative temperature drift.

> Precision arrays may quote differential tolerance

Exactly, which is why you have to read the datasheet.


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