Hi Team,
My customer is evaluating CDCI6214 with 2.5GHz VCO.
- Y1 : 2.5GHz / 4 / 4 = 156.25MHz
- Y2 : 2.5GHz / 5 / 5 = 100MHz
- Y3 : 2.5GHz / 5 / 15 = 33.333MHz
- Y4 : 2.5GHz / 4 / 4 = 156.25MHz
When they measured Closed-Loop Phase Noise of their CDCI6214 board,
- Closed-Loop Phase Noise was around +20dBc/Hz higher than that of "Figure 2. 156.25-MHz Carrier" on page 13 of Datasheet.
- Frequency error was +30ppm, or +10ppm under Crystal.
Could you let me know the test conditions of Closed-Loop Phase Noise of "Figure 2. 156.25-MHz Carrier" including Loop Filter setting?
Thank you.
Best Regards,
Koshi Ninomiya
