I am working on a concept with the first stage interfacing 4 bridges to separate AD8557 amplifier circuits and in the next stage I would sum them up for consolidated output as required by my application. Bridge sensitivity is 7.5mV with 5V excitation and I would be using complete analog path from input to output. Is this Offset and Gain adjustment is one time programmable which will be done digitally? if we made DIGIN pin in accessible area, can we correct these individual offset as and when need to be calibrated?
After going through data sheet, i am worried that these adjustments many not be possible with this part.