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AD8421 REF input daisy chained summing amplifier

Question asked by new_to_analog on Aug 29, 2015
Latest reply on Sep 2, 2015 by new_to_analog


I am designing daisy chained multiple AD8421 where output od first feeds REF input on

next in a row and so on.With this approach I would like to make simple but precision

summing amplifier stage. The output voltage after amplification at each amplifier

would be in range of 80uV to 0.5V.


The main question here is, would be possible to work with such low voltage as 80uV

at REF input?