[sdiy] ADc & DAC voltage dividers.. fixed resistors values finally..

Mike Bryant mbryant at futurehorizons.com
Tue Feb 16 20:52:28 CET 2021


> But to me 5V rail to rail opamps will never reach 0 neither +5.0v at their output when these values show at the input..
> Close values but not the original ones.
> Or maybe I am wrong on that.

The ones for ADCs have FET output stages so they'll happily go all the way to zero accurately and pretty near to the positive rail.  And many ADCs don't go all the way up to 5V anyway as they need some headroom for the internal op-amp on the voltage reference




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