LMX2594EVM: LMX2594EVM

Izik

Part Number: LMX2594EVM

Hello Dean

Does the spur calculation take in account the loop BW? Does the spur suppose to be attenuated by the loop or the coupling occurs in the VCO so the spur level is not affected by the loop BW?

over 8 years ago

0 Shawn Han over 8 years ago

TI__Genius 9920 points

I noticed our experts. They will reply you later.

0 Noel Fung over 8 years ago in reply to Shawn Han

TI__Guru** 121130 points

Hi lzik,

I assume you were referring to the spur calculation in PLL Sim.
Right, for spurs generated from PLL, the calculation already taken the loop bandwidth into account. If you play around the loop bandwidth, you will see the change.
For spurs due to coupling, which is outside the scope of the PLL Sim.

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LMX2594EVM: LMX2594EVM