Op Amp Classic Gain and Linearity Testing Circuit Diagram

2016-01-30 13:03  
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Diagram below shows you with a classic test fixture that has been used for long periods in order to give anyone for resolving the non-linearity errors for operational amplifiers.

Op Amp Gain Test Circuit Schematic

In this op amp gain test circuit, Rin and Rf are used to give the input voltage for causing an output voltage of 20V p-p (surely can be seen on oscilloscope). R3 and R4 are used for magnifying error voltage by a factor of ~1000, the ratio of R3 to R4.

By this setting, one will avoid the need for a low-noise preamp.