ADuM140E pull up

Hello

Our customer asks below question  about ADuM140E  because he will set  enable pin to OPEN .

Please let me know your advice.

Question

Datasheet describes that EN pin of ADuM140E can be opne.

Does this contain internal pull-up resistor ?

If so, could you teach me resistor value of pull-up ?

Regards,

Terumasa

Parents
  • +1
    •  Analog Employees 
    on Nov 7, 2018 2:01 AM

    Hi Terumasa:

    Actually the pull-up function is not realized by resistor but a weak current source. Its typical value is 3uA when EN is tied to its reference ground. we would suggest to connect it to VDD if the application is noisy.

    Regards

    Chris

Reply
  • +1
    •  Analog Employees 
    on Nov 7, 2018 2:01 AM

    Hi Terumasa:

    Actually the pull-up function is not realized by resistor but a weak current source. Its typical value is 3uA when EN is tied to its reference ground. we would suggest to connect it to VDD if the application is noisy.

    Regards

    Chris

Children
No Data