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LMX2820: VCO_CAPCTRL & VCO_DACISET estimation formula of LMX2820

Yao-Hua
Prodigy 120 points
Part Number: LMX2820

Hi, Team :

I can't find any estimation formula of VCO_CAPCTRL & VCO_DACISET of LMX2820.

Without this, i don't know how to do VCO calibration through partial assist method.

Could you please provide the formula of VCO_CAPCTRL & VCO_DACISET for LMX2820?

Regards,

Yao-Hua

  • +1
    TI__Guru** 108410 points

    Hi Yao-Hua,

    You can do an auto-calibration and then readback to get these values. As long as the xxx_FORCE bits are not checked, the calibration will use these values as the starting point. In other words, you don't need a table to manually calculate these values. Instead, do an auto-calibration to get these values.