I want to interface a pH probe. The Op-Amp I would like to use is INA128.
My ADC's range is 0 to 5 volts. pH sensor gives a voltage output that is ranged from -0.5 to 0.5 volts, for 0 pH to 14 pH respectively.
Perhaps, I need to give an offset of about 2 volts to Op-Amp and set its gain to 2. If I do that, will negative voltages be substracted from 2 volts?