i have been using ADS1278EVM-PDK as standalone.
I have interfaced my board with EVM ( with no buffers selected for CH1 to CH4 i.e S4, S5, S7, S8 turned OFF) and no inputs connected except for the power supply of 5V, 3.3V and 1.8V.
Despite not providing input to any of the channels, I can see there is a constant voltage of 0.9V on input pin of Channel 3 i.e pin J3.4.
I have referred the schematics and it looks quite simple with no chance of anything going wrong or shorting with any other input.
May I know what can be the cause for this constant voltage on the input pin?