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