I wish to know to know the performance of ADF4111 PLL with respect to Clipped sine wave reference vs pure sine wave reference. What is the differences in terms of performance like Phase noise, harmonics with respect to above two Ref inputs. Please share if you have any paper regarding this.
There is negligible difference between using a clipped sine wave vs. pure sine wave. Clipped sine wave is slightly preferable as it may slightly reduce reference spur power.
The ADF4111 performance (phase noise included) is the same for all the reference waveforms mentioned above.
Clipped sine wave is the waveform I see used most often.
CMOS and TTL are both good provided…