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ISO3080: Isolation of DC level as opposed to higher data rate

Part Number: ISO3080

Hi,

Can someone confirm whether the ISO3080 can transmit a DC level?

The datasheet describes its ability to transmit up to 20mbps, but nowhere can I find details on minimum frequency.

It occurs to me that as it is a 'capacitive' coupling device, there would be a minimum frequency for the data and as such transmitting a simple logic state (nominally DC), it would not be able to do.

Please can someone tell me if it can, and if not, what devices TI do that can transmit a DC level?

many thanks

J

  • Hi John,

    ISO3080 can transmit DC level,

    The internal architecture modulates the low speed data rate to transmit it through the capacitive isolation barrier.

    Regards
    Tejas
  • In reply to Tejas Hommaradi:

    Hi Tejas,

    So to clarify, if I have a signal connected to the input of the ISO3080 that is in a logic '1' state for an indefinite period of time (10 minutes ~ 10 hours....), the output will be in the corresponding '1' state for the same time?

    My application requires a logic signal to pass through an isolation barrier  (ISO3080) and remain in a state  (1 or 0) for a long time. Will the ISO 3080 do this?

    Regards

    J

  • In reply to John Veness:

    Hi John,

    Yes, if the input is kept at logic state '1' for an indefinite period of time the output will also stay at '1' for the same indefinite period of time.

    Regards,
    Anand Reghunathan

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