I have some unclear questions needed to clarify with you.
In the datasheet, the input bias current with respect to differential input voltage for VCM = 0 and VCM=5V as shown below, Pic 1 and Pic 2. Figure 11 shows another input bias current specification with respect to input common mode voltage. How should I use all these data ? If my Vcm is > 10V, what is the “input bias current” for specified differential input voltage? And what will the variation for the worst case analysis?
Attached below is the internal circuit of AD8215, Pic1 and Pic2. Thanks.
May i know what's the suggested resistance values needed for R1 and R (VCM is 10-16V) as below?