I am designing a differential amplifier for a Wheatstone bridge which have small voltage variations like 0uV to 20uV. so need to design an instrumentation amplifier. I do not know how to find the maximum gain that can be get from an opamp (I know how to calculate overall gain from resister values used). data acquisition frequency is not a huge matter in my application. 5Hz or 5 samples per second reading would be enough via an microelectronic.
UA741 how to find maximum gain that can be archive from this opamp(frequency at 5Hz)?