The oscillator data sheet will have the phase noise numbers. Attached is a data sheet from an oscillator that has ultra low phase noise. We use this part on many of our EVM's. I am not an expert on this field but the document I sent and the ones attached…
Yinon,
Yes, using a 1:N transformer will allow you to increase the signal swing without adding noise as this is a passive device. You will need to be careful when choosing a transformer as the linearity will vary from model to model. I have attached…
slau579d.pdf Leejh,
Connect a 80Msps clock (or lower) to SMA J9 with a power of at least 10dBm. See section 1.4 and figure 7 of the attached ADC3423EVM User's Guide.
Regards,
Jim