On page 22 and Fig. 36 of the AD7606 datasheet, it is recommended to add a corresponding series resistor on the VxGND pin for applications that have a series resistance on the analog input to limit current below 10mA.
Does this apply only for applications with high input voltages (above +/-16.5V), or does this apply in general whenever there is a series resistor on Vx?
I'm using the AD7606 in a very low bandwidth application (< 1Khz), and I would like to add a first order RC anti-alias filter on the Vx pin. I'm wondering if I would have to add a corresponding resistor on the VxGND pin as well to comply with the datasheet.
I picked the AD7606 for it's multi-channel simultaneous sampling capability; I've already integrated it into my SW, and I would prefer not to change it unless there is a compelling reason.