Other Parts Discussed in Thread: LMX2594
Tool/software:
Is there any input impedance information on the reference in pins on the LMX-2694-SEP synthesizer? We are trying to interface it to a differential CMOS oscillator and need to understand the loading of these pins a bit better.
I don't see an IBIS model for this part but I used the LMX2594 IBIS model as a substitute. After simulation, the input capacitance of the pins at the OSCin inputs appear to be equivalent ~ 0.15pF. Does this seem correct?