Other Parts Discussed in Thread: OPA2131
It was described in the datasheet that the Vg is 0.7 V less than the common-mode voltage. However, it may cause the drl amp(the opa2131 in figure) saturate. As a matter of fact, this may lead to the failure of the drl feedback. And I need a INA amp to collect EEG as well as can provide Vg almost the same as the Common-mode voltage, any recommendation?
