Just wondering if you can you parallel up the 4 stages inside the AD8403 to make nom 250R and use them as Rg for In-Amp ?
This is mainly for calibration of the front end and not dynamic gain changing. Once set for a particular input condition the wiper values (all the same) will not be changed.
Points I'm considering are what effects there might there be on -
Overall TCR ?
Has anyone tried this, will it work or are there any other thoughts or ideas ?