LMX2594: Multiplier frequency range

Hi team,

Can LMX2594 work with fMULT=20MHz?

In the datasheet, fMULT range is defined as 30MHz to 70MHz.

My customer confirmed that it works with fMULT=20MHz on the EVM (lock and phase noise are OK).

So they assume it should work with lower frequency like 20MHz.

Verified condition is below:

• fREF                    :10MHz
• Input doubler     : ON
• fMULT                :20MHz
• fPFD                   :100MHz
• fVCO                   :8000MHz

Regards,

Itoh