I want to use the the AD8221 amplifier as a conditioner for my load cell. I saw that to reduce noise I can use an "active guard shield driver" between the "REF" of my amplifier and the shield.
If someone has already worked with something similar or have knowledge on this subject it will help me if you can explain me why and how it is working? And if I really need to use it?
Is it not enough to just connect the "ref" to my GND and the same for my shield?