We have some preliminary sketches above the block diagram of receiver.
I am found some idea in article: snau078 "Low IF Receiver Reference Design". I have some questions:
1) In SP16130CH4RB Reference Board using CVHD-950-100 -> Low Noise Oscillator and LMK04031 -> Clock Jitter Cleaner.
Phase Jitter [CVHD-950-100]
1kHz -140 dBc/Hz
10kHz -155 dBc/Hz
100kHz -164 dBc/Hz
1MHz -166 dBc/Hz
VCO Closed Loop Phase Noise [LMK04031] -> fCLKout = 250 MHz
1kHz -125 dBc/Hz
10kHz -130 dBc/Hz
100kHz -132 dBc/Hz
1MHz -148 dBc/Hz
CVHD-950-100 has better phase noise performance than LMK04031. Why using Clock Jitter Cleaner with CVHD-950-100 in SP16130CH4RB board ?
2) Could you recommend me ultra low noise amplifier [block before LMH6517] ?
I am hope for your understanding and help.