Noise contributions when using AD6645 in undersampling application.

I would like to calculate the noise expected when using an AD6645 in an undersampling application, to sample a signal at 180 MHz using a 55 MHz sample rate.

Could you tell me a reference that shows me the contributions to noise and the calculations needed to work out the total noise expected?

Thank you for your help.


[edited by: admin. at 2:34 PM (GMT -4) on 9 Aug 2018]