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?