oddson
Well-known member
Is that jibber-jabber for 'use GND' or 'it doesn't matter'?GND. IIRC, the input/output switching with these MOSFET switches is basically floating (within the allowed limits) and only the control section refers to VSS. Even a very dirty GND could not "modulate" the switches' on resistance strong enough to see any effect.
If AGND isn't better then I suppose using it could be a source of noise for the voltage dividers so GND is preferred.
(edit. - lol - I thought IIRC was some electrical thing I didn't understand instead of a blog shorthand. Threw me off reading 'GND' full stop!)
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