JAJSE94B december 2017 – august 2023 LMK61E07
PRODUCTION DATA
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The phase detector spur occurs at an offset from the carrier equal to the phase detector frequency, fPD. To minimize this spur, consider a lower phase detector frequency. In some cases where the loop bandwidth is very wide relative to the phase detector frequency, some benefit might be gained from using a narrower loop bandwidth or adding poles to the loop filter by using R3 and C3 if previously unused, but otherwise the loop filter has minimal impact. Bypassing at the supply pins and board layout can also have an impact on this spur, especially at higher phase detector frequencies.