SPRUJ53 April 2024 TMS320F28P550SJ , TMS320F28P559SJ-Q1
Figure 17-1 shows the block diagram of the PGA. The active component in the PGA is an embedded operational amplifier (op-amp) that is configurable as a non-inverting or inverting amplifier with internal feedback resistors. These internal feedback resistor values are paired to produce software selectable voltage gains.
Three PGA signals are available at the device pins:
Take note that PGA_OUT _INT is an internal signal at the op-amp output, which is available for sampling and monitoring by the internal ADC and CMPSS modules.