>>2943445
>EMI inside a device which has all kinds of other digital and analog circuitry crammed into a tiny box
Well yeah that's going to have some effect, but I can't do a back of the envelope calculation to say by how much, like I can with jostling. My point stands either way, you're not getting anywhere near 100fs of clock jitter.

>12GHz bandwidth
Cool, your signal will have something in the ballpark of an 83ps rise time at maximum. Where along this glacial rise do you think your clock recipient will trigger a sample within 100fs each time? I've drawn it for you.