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Use ADF4158 with frequency below 0.5 GHz

I want to use the ADF4158 with a 100 MHz to 500 MHz  RF input frequency (RFin).

In accordance with the ADF4158 specification (please see page 3 of data sheet) a condition of the PLL at frequencies below 500 MHz is

RFin slew rate > 400V/us.

Is there an example of a simple solution to this problem   - Such as the comparator or LVPECL driver ?

Vlad

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  • Hi Vlad,

    ADCMP604/ADCMP605 should also be fine. However, they are a bit slower (rise/fall time, propagation delay)  and have narrower input bandwidth compared to the ADCMP553. What's more, the CFTL(Circuit from the lab) will contain the ADF4153 and ADCMP553. Once we have it ready and tested, we can comment on its performance.

    Regards,

    Dawid

Reply
  • Hi Vlad,

    ADCMP604/ADCMP605 should also be fine. However, they are a bit slower (rise/fall time, propagation delay)  and have narrower input bandwidth compared to the ADCMP553. What's more, the CFTL(Circuit from the lab) will contain the ADF4153 and ADCMP553. Once we have it ready and tested, we can comment on its performance.

    Regards,

    Dawid

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