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ADC driver output resistance

Category: Hardware
Product Number: ADA4930-2

I would like to implement  AAF (as a LPF) at the output of ADC driver, the MPN is ADA4930. The filter characteristic is depended on its input impedance. There are output resistors 22R at Out+ and Out-, but to get proper simulation results I need to know internal output resistance of ADA4930. Can you estimate the output resistance? Or is it significantly lower than 22Ohm?