Could someone please elaborate on what 15% normal mode tolerance implies in below listed datasheet section.
We have one of the three units showing significantly larger OUT waveform than what would be consistent with 1% components and 1% digipot value. We have the digipots in each unit configured identically near mid point to achieve what we interpret as 1% value based on your tables for 1% codes.
Inputs (IN) to op-amp on each unit is very near identical but OUT on one of the units is noticeably larger, implying gain is larger. Digipots A and W terminals are connected in inverting op-amp as shown below.
Moreover, when i replace the digipot with a fixed 25.5k resistor, I get consistent output across all three units.
Is this expected behavior?
