SPRUJ53B April 2024 – September 2024 TMS320F28P550SJ , TMS320F28P559SJ-Q1
The absolute output range of the PGA is bounded by the analog VDDA and VSSA supplies – the PGA cannot produce output voltages greater than VDDA or less than VSSA.
Although the PGA can produce full-scale output across the absolute voltage range of VSSA to VDDA, the amplifier output is only linear within a subset of the absolute range. This reduced range is referred to as the linear output range.
The PGA performance specifications in the device data sheet only apply to the linear output range. For best performance, the input signal can be conditioned in such a way that the PGA stays within the linear output range during normal system operation.