Hi,
I'm using the ADG5207 8 port differential multiplexer with 0-5Vdc input signals (steady state DC signals at very low current draw through the multiplexer). The differential outputs from the multiplexer are conditioned and routed to a high resolution analog to digital converter (sigma delta type). This ADG5207 chip has a pretty low input leakage on its own in the powered condition (around 200 pA). What happens when I have the 5Vdc input circuits connected to the multiplexer inputs of the chip when it is in an un-powered state (Vdd=Vss=0V)? The data sheet does not seem to characterize the leakage in this non-operating condition. I'm worried about inadvertently discharging or otherwise disturbing my inputs which are sensitive dc level signals that are always on (routed from another unit).
Thanks
Ron
