The XTR115 and XTR116 are precision current output converters designed to transmit analog 4-mA-to-20-mA signals over an industry standard current loop. The regulator and reference voltages power a sensor, such as a bridge as shown in Figure 7-1. The sensor output, as a current signal I_IN, is gained up and transmitted over the loop to be read by a receiver.

Figure 7-1 Typical Schematic