41.6.10.4 Cascaded Inverting PGA

The OPAMPs can be configured as three cascaded, inverting PGAs using these settings in OPAMPCTRLx:

Table 41-5. Cascade of three inverting PGAs (Example: R1=4R, R2=12R)
MUXPOSMUXNEGRES1MUXPOTMUXRES2VCCRES2OUTRES1ENANAOUT
OPAMP0011001011000110
OPAMP1011001101000110
OPAMP2011001101000110
Figure 41-5. Cascaded Inverting PGA