LMX2820: limit to number of frequencies stored during instant cal

Gary Homer

Part Number: LMX2820

Using instant cal, is there a limit to the number of frequencies that can be stored? If we do 1MHz steps, there will be 5650 points. If we do 5MHz, 1131 points. What is the size of the eeprom in the 2820?

over 3 years ago

0 Noel Fung over 3 years ago

TI__Guru** 108170 points

Hi Gary,

Instant cal will run the calibration routine by itself, the frequency step is fixed and is not user configurable.

0 Gary Homer over 3 years ago in reply to Noel Fung

Prodigy 155 points

Noel, after I ran instant cal all the returned band/cap values looked good except at the low end of band 4. The plot below shows the abrupt change in cap value and tuning voltage over the first 10MHz of the band. This results in a Kvco change of 2:1 at the boundary. Is there a way to avoid this?

0 Noel Fung over 3 years ago in reply to Gary Homer

TI__Guru** 108170 points

Hi Gary,

I have shot you a mail, please check your mailbox.

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LMX2820: limit to number of frequencies stored during instant cal