dc/dc isolated transformer

[abraxalito]

In that case its fairly vital to know what common-mode noise the supply's going to generate. Does any manufacturer spec this?

 

[cdsgames]

my guess > providing a clean clock in the presence of a noisy digital ground. answer > how to isolate the ground and power without adding another off board supply.

Correct.

We want this clock to be as precise as possible. Look at Ians Fifo clock board (not the fifo board) they are using LDOs if powered from FIFO

 

[infinia]

We want this clock to be as precise as possible

can we bound this spec better.
what is the clock? does your FPGA clock interface have a special requirements too, separate power pins? differential

does the clock have a pushing spec ? V supply to Fc modulation out