According to the specification sheet you should not really see a problem although one other major influencing factor is the 'loop' rate or in other words what else you have going on at the same time.
The maximum sampling rate was quoted at 360Hz but it will also depend on what filters are selected as well.
What frequency is the signal ?
The data sheet can be found here
http://www.ni.com/pdf/products/us/cpf_fp_ai.pdf
