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Q4. Will the same anti alias filter work for both voltage and current inputs of AD4111/AD4112?

Figure 2. Antialiasing RC filter

The current inputs do not have any special considerations and thus can use the same anti-alias RC filter as voltage inputs, 4.7nF/180Ω. Just note that a 180 Ω resistor in series with 60 Ω impedance of the AD4111 /AD4112 current input results in a typical total input impedance of 250Ω.

Figure 3. Simplified Current input circuit