SBOU268 November 2021 OPA593
The VOUT voltage is 10x the voltage difference or signals applied at VIN+ J9 and VIN– J5. If 1 VDC is applied at the VIN+ input, and –1 V is applied to the VIN– input, the input voltage difference is 2 V, and VOUT is 20 VDC. For ac input signals applied to VIN+ and VIN–, VOUT is 10x the difference between the two input signals occurring at any particular instance.
The general expression for the output-to-input voltage relationship for the op amp difference-amplifier configuration is: