The graphical representation shows an internal op-amp amplifying the signal entering the comparator's positive input.
However, the STSPIN32G4 positive input comparator cannot be an op-amp output unfortunately and is limited to op-amp positive inputs - see Ref. Manual RM0440 ver 9 (Figure 168).
This is misleading, because only non-amplified signals gets to the positive input of the comparator.
