I need to isolate with a 8mm. creepage some analog signals (0-5V). I found some linear optocoulpler but i'd need an amplifier and i should make even some tuning because of the K3bin of the optocoupler. So i was thinking of use the ADuM4190. According to you is it a good choice? I'd set the gain to be 1 and so i shouldn't need any tuning: is this correct?