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ISO3082: ISO3082 vs ADM2483 in terms of power consumption

Part Number: ISO3082

Hello, dear hotline.

My customer' s looking for a replacement part for isolated RS485 - ADM2483. He looks at ISO3082 but there're some doubts.

Their design is half-duplex, 3.3V on one side and 5V on the other side (485 line).

Does smb have maybe fighting guide comparison between ISO3082 and ADM2483 power consumption.

It's important to know what is current consumption on VCC1 (and also the consumption on all inputs from VCC1 side), when VCC2 is fully turned off (=0) &  DE RE are also turned off

In other words customer wants the minimal current consumption on VCC1 in device standby mode (in turned off condition). He can't see this parameter in ADM2483 datasheet.

It will be great if you could provide such comparison between ISO and ADM.

BR, Anastasia

  • Hi Anastasia,

    Thanks for your interest in isolated RS-458. I will check with the rest of the team to see if we can provide you with a fighting guide for ISO3082 vs ADM2483 and get back to you by Friday.

    Best regards,
    Dan
  • In reply to Dan Kisling:

    Hi Anastasia,

    The ISO3082's power consumption performance is not quite as good as ADI's. However it does have better ESD and CMTI performance. 

    Parameters ISO3082 ADM2483
    ESD HBM kV ±4kv ±2kv
     Supply Current  (mA)
    Vcc1 = 3.3V
    8 max 1.3
    CMTI (kv/μs)  50 typ 25 typ

    If you are open to a more discrete option (isolator + RS485 transciever) I can recommend a lower power option than the ISO3082

    Let me know if I've answered all of your questions.

    Best regards!

    Dan

  • In reply to Dan Kisling:

    Hi, Dan!

    Thank's for your fast reply. I'll keep in mind your suggestion about a discrete solution and forward it to customer.

    Best regards, Anastasia

  • In reply to Anastasia Ivanova11:

    No problem Anastasia. Happy to help!

    If you have any other questions please let us know. If I have resolved your issue for ISO3082 vs. ADM2483 you can click "this resolved my issue." If you have further questions you can reply to this post or start a new thread.

    Best regards,
    Dan

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