LMX2572LPEVM: Re: LMX2572LP EVM

Part Number: LMX2572LPEVM
Other Parts Discussed in Thread: LMX2572LP

Tool/software:

Dear Technical Team,

Recently, I bought the LMX2572LP EVM. The problem is, that I gave the reference input for the PLL of 15.625 MHz. All the prescalers are set to 1 including the doubler. I need the RF_out at 40 MHz. Instead of 40 MHz output, I saw the output around 50 MHz. I tried setting the charge pump gain for different values and frequencies, but the result is still the same. Could you please give some insights to obtain a reasonable frequency offset? Thank you in advance.

Best Regards.