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Interface and Isolation

Q&A in and out impedance

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in and out impedance

Jimmyjie2004 on Mar 7, 2014

Hi Gents,

What is the input/output impedance of Adum3441? It's for high speed so I want to make sure it's 50 ohms.

Thanks

Jim

0 ADIApproved

on Mar 7, 2014 8:26 PM
Hello Jim,

The ADuM344x inputs are CMOS gates, so the impedance is high. You may wish to terminate the line externally if you're concerned about signal integrity.

The output impedance is approximately 80 ohms. Note that all AC parameters are guaranteed with a maximum 15 pF output load capacitance.

DaveC
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0 Jimmyjie2004 on Mar 31, 2014 4:55 AM

Hi Dave,

Thanks.

As for these speed higher than 100MHz, suggest to put the in/out impedance characteristic in D/S.

Regards,

Jason
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0 EZAdministrator

on Aug 2, 2018 2:35 PM
This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

Thank you,
EZ Admin
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