The surface-mount version of the INA114 has a separate output sense feedback connection (pin 12). Pin 12 must be connected to the output terminal (pin 11) for proper operation. (This connection is made internally on the DIP version of the INA114.)

The output sense connection can be used to sense the output voltage directly at the load for best accuracy. Figure 6-5 shows how to drive a load through series interconnection resistance. Remotely located feedback paths can cause instability. This instability can be generally be eliminated with a high-frequency feedback path through C₁. Drive heavy loads or long lines by connecting a buffer inside the feedback path (see Figure 6-6).

Figure 6-5 Remote Load and Ground Sensing

Figure 6-6 Buffered Output for Heavy Loads