Other Parts Discussed in Thread: LMX2594
We’re planning on using the LMX2694-EP in our RF design size of things and had a brief operational question.
The plan is to use both RFOUTA and RFOUTB outputs form the synthesizer to service two channels of an RF frequency converter.
It is clear to me that both outputs can be configured to the same output frequency inside the operating range of the synthesizer.
What is less clear to me is what the phase offset may be, if any, between these outputs. At a high level it seems that any potential delay
may be due to just the differences between the physical Mux and Output buffer circuits that each output is subjected to. These appear to be the same
based on the block diagram of datasheet page 14.
However a closer look at sheet 23 of the datasheet presents some additional circuitry that’s in place in the “B” path to support the SYSREF function
that’s not present in the “A” path. I’m curious if this introduces some skew on the “B” output, relative to “A” even when configured for identical frequency
outputs. Is there an offset that exists/could exist between the two? If so, can you quantify how much?