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tommino's avatar
tommino
Icon for New Contributor rankNew Contributor
4 years ago

FPGA PLL minimum frequency

Hello,

My baseline design is to use a PLL to multiply (by a factor 1000 or so) an incoming clock signal of about 1 kHz. Is there any FPGA family with such a low frequency input for the PLL?

If the above mentioned operation is not feasible, I think I will have to generate inside the FPGA (not selected yet so feel free to reccommend one) two clock signals : the first shall have a frequency of about 1 kHz and the second of about 1 MHz.

Could you please help me in assessing which is the best (in terms of feasibility annd jitter performance) solution?

1 Reply

  • Ash_R_Intel's avatar
    Ash_R_Intel
    Icon for Regular Contributor rankRegular Contributor

    Hi,

    There are no devices with such low frequency input for PLL.

    It is easier to get a high frequency clock and divide it to generate lower frequency.


    Regards