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    DZC
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    How do we usually get rid of clock skew?

    I've heard PLL,DLL and SMD are often utilized in such situation,but I'm not sure is it possible for a Phase Detector achieve the zero phase difference when the loop is locked. If it's possible what technique must be used?

    Thanks for your reply!

    •   Alt28th November 2007, 10:57

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    How do we usually get rid of clock skew?

    clock skew is not same as zero phase difference.



    •   Alt29th November 2007, 11:08

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    How do we usually get rid of clock skew?

    In order to get rid of clock skew, I think the best solution is to use DLLs . I don' know a better method. However in order to minimize the skew of the DLL make sure to eliminate the deadzone. Also , minimize the charge pump mismatch.



    •   Alt29th November 2007, 18:36

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    How do we usually get rid of clock skew?

    your question is not clear. If you have eg 2 outputs on different side of IC and want them to switch with 0 skew no PLL will help you. You need to do a proper layout to have the clock path as symetrical as possible.
    If you want clock in phase with input clock - PLL will work



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