SBOU024C august 2004 – july 2023 PGA309
The PGA309 is a smart programmable analog signal conditioner designed for resistive bridge sensor applications. It is a complete signal conditioner with bridge excitation, initial span and offset adjustment, temperature adjustment of span and offset, internal/external temperature measurement capability, output over-scale and under-scale limiting, fault detection, and digital calibration. The PGA309, in a calibrated sensor module, can reduce errors to the level approaching the bridge sensor repeatability. Figure 1-1 shows a block diagram of the PGA309. Following is a brief overview of each major function.