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LMK00308: internal pull-down resistor for CMOS control input

Kazuhiko Hirano
Genius 12613 points
Part Number: LMK00308

Hello,

 

How much ohms are the internal pull-down resistors for the CMOS control input pins?
Please let me know the typical values and +/- how much % varies under PVT variation.

 

Best regards,

 

K.Hirano

  • 0
    TI__Intellectual 770 points

    Hello Hirano-San,

                                Thanks for reaching out with your question. It seems the datasheet is not very clear with the value of the pull-down resistor on CMOS control input. I will ask internally for this value and the PVT variation. This will take few days and request your patience in the mean-time. My guess is the resistance value is at-least 100k Ohms based on the IIH spec which is max of 50 uA (with VDD of 3.465V, this will give around 70 k Ohms worst-case and if you add around 40% PVT variation, this would be easily > 100 k Ohms. In any case, i will confirm the exact value and variation.

  • 0 in reply to Badarish
    TI__Genius 12613 points

    Badarish,

     

    Thank you for your response.

    I look forward to receiving exact value and variation.

     

    Best regards,

     

    K.Hirano

  • 0 in reply to Kazuhiko Hirano
    TI__Intellectual 770 points

    Hirano-San,

                        I was able to get information from my colleague pretty quickly and as i had guessed the pull-down resistor is indeed 100 k Ohms and the PVT variation is around +- 30%.

    Let me know if you need further clarifications.