Could you please comment on what input pin current to expect? The way we read the datasheet the current should be really low, low pA range, yet in some test boards we see indications of higher values.
According to what we see, the current into VIN+ is just over 100 nA. In our test setup we connect VIN+ to the mid point of a resistor voltage divider, that divides 1.803V using 470k and 910k (1.803V -> 470k -> mid point -> 910k -> GND). The resistor values have been confirmed through measurement. The mid point voltage is measured to 1.157V. With these values we conclude that the current through the 470k resistor is ~1.37uA, while it is ~1.27uA through the 910k, leaving ~100nA for the VIN+ pin. It would correspond to about 11 MOhm resistance to ground through the VIN+ pin.
We would like to understand the VIN+ current more in detail so that we can pick resistor values to set the VIN+ voltage in detail, including any variations/tolerances. Have we misunderstood the expected level of current into VIN+ pin, or would you see it more likely that something else has gone wrong to procuce the 1.157V voltage at the mid point?
