A basic functional test that can be done without any modifications to the hardware is illustrated in Figure 2-1. The ±15V supply allows for a common-mode input range and output range of approximately ±13.25V. The input in the example has a common-mode voltage of 0V, and a differential voltage of ±50mV. The example input signal sets the output signal range to ±10.05V. To achieve good accuracy for this test a low noise precision input source needs to be used.

Figure 2-1 Initial Setup

Input capacitors can be added using C4, C5, and C6 to provide common-mode and differential filtering. The external filtering can help filter out common-mode and differential signals and noise. TI recommends to size C4 and C6 at the same magnitude, and C5 must be at least 10 times larger than C4 and C6 to prevent capacitor mismatch and increasing error contributions.