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Question about HMC914LP4E

Hi All,

I have some questions about our circuit design (HMC659+HMC914).

Please help take a look at the attachment and give me some advice. Thank you.

Regards,

Kazumasa

QuestionaboutHMC914.pdf
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  • Hi Kazumasa,


    HMC914 input is a CML and the input common mode is equal to VDD. The 3.3V +/-0.4 is an acceptable spec. The AMR should be updated to

    min: VDD-1.3V

    max: VDD+0.5V


    We do not recommend operating the input over VDD+0.5V.


    Let us know if you have additional questions or comments.


    Thanks

    Ahmet

Reply
  • Hi Kazumasa,


    HMC914 input is a CML and the input common mode is equal to VDD. The 3.3V +/-0.4 is an acceptable spec. The AMR should be updated to

    min: VDD-1.3V

    max: VDD+0.5V


    We do not recommend operating the input over VDD+0.5V.


    Let us know if you have additional questions or comments.


    Thanks

    Ahmet

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