May i know based on the ADA4940-1 datasheet, how can we derive the current required for Vocm pin?
Given that the input resistance stated is 250kohm, does it means that if inject 2.5V, the current drawn will be 10uA?
The input bias current of this part varies with Supply voltage. Typical values are 4 uA and 1 uA for Vs=5V and Vs=3V, respectively. Please refer to VOCM characteristics in the datsheet for further details.
May I know what will be your intended application for this part? Thank you.