I have an instrumentation amplifier, INA 126. I am using it to amplify the physiological signals from the eye movement. The circuit I have constructed has 2 stages: 1st stage has INA 126 with a gain of 1000 and the 2nd stage has another INA 126 also with a gain of 1000.
My question is that the 1st stage only has one output so where do I connect this output?I have tried connecting it to Vin+ and grounded the Vin- of the 2nd INA 126, is this the right thing to do? I have read the datasheet and it does not mention of having one input only.
P.S I am using dual supply.. +12V and -12V and I have connected the Ref pin of the INA126 to ground as mentioned in the datasheet.