Other Parts Discussed in Thread: CODELOADER
Hello,
We'have been using LMX2571 in our civil projects and now we're struggling with some spur issues.
We added spur-b-gone algorithm to our own codes. In the app note below, it says, "The Spur-b-Gone button on CodeLoader works by iterating through all valid PLL_R_PRE, PLL_R and MULT values and calculates an index for each one. Then it chooses the highest (best) index.". However, the highest index doesn't give the best solution for some output frequencies.
As you can see in the table below, the highest index is 17,5 for our case and Pre_R, Mult and Post_R are 1,5 and 9 respectively. But, TICs Pro chooses the first one; 1,5 and 4. So, how does TICs Pro decide that is the best index?
Kind regards,
Gul Yesa YILDIRIM