The application note explains how AVSensors pressure transducers incorporate laser-trimmed gain-set resistors that normalize sensor span variations and simplify amplifier design. When paired with a differential amplifier stage, this resistor precisely programs the gain required to convert the bridge’s millivolt output into a stable 0–5 V analog signal.

The circuit architecture allows for precise, non-interacting zero and span calibration using a single power supply. It supports both three-wire voltage output and two-wire current loop output configurations. The design is compatible with AVSensors' compensated pressure sensor series utilizing constant current excitation.