Other Parts Discussed in Thread: LMK04828
Could you please suggest me how to improve the NF?
My customer has tried the things below, but it was not effective:
- Add decoupling cap on VCC
- Stop inputting SYSREF after the start
- Decrease DACCLK input amplitude
DACCLK is from LMK04828 as PECL, so it is expected that phase noise should be as small as possible, but my customer considers to review the filter cut-off frequency.
Is there any possible way to get the NF better?