I am using an AD7147 capacitive sensor chip to detect objects inserted between parallel plates. To extend the setup, I would need to use several AD7147 chips to do the job (each one can measure up to 13 channels). However, I am worried that the AC-shield line of these chips will not be synchronized. Is it possible to force the chips to run in sync? For example, connecting the AC-shield outputs of all chips, maybe with a resistor.
Has anyone tried something similar before?
Thanks a lot,