LM27762 is a charge pump combined with an ldo. It outputs a +2.5v and a -2.5v. The charge pump portion switches at 2 Mhz.
I am not worried about the ripple noise at 2mhz + harmonics I will take care of that with pi filters and lc filters.
What im primarily concerned about is the noise created from the rise time. I cant figure out if the switching rise time noises path is my outputs?

This is to power a very sensitive analog eeg. Ads1299. Can anyone figure out if the rise time affected loop is constrained in the lm27762 or is its path the out+? The out- is technically pulling into the lm27762 so its not going to the ads1299 any way.

I simply dont want the rise time of the charge pump 2mhz switching to affect the power that hits the ads1299.

DATASHEET = ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Flm27762

 

In all cases of high speed switching power devices, some filtering will be required. The design of minimum cost, but adequate, filters is not trivial, by any means. There are filter assemblies available.
(added) What is missing from the PC drawing is the return paths. Not even shown, and certainly part of a loop.

 

In all cases like this there are three current loops: The first loop is between the power input supply and the input power return. The second and third current loops are between the output voltage pins and the output voltage return pin. Inside the device are fast switches that change the connections to the external capacitors. An adequate design assures that the current carrying traces to those capacitors do not couple to the output current paths. So those current paths need to not be shared nor even in close proximity.