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ADS1278-SP: Considering this part for a new design

David Durachka
Intellectual 400 points
Part Number: ADS1278-SP

Good afternoon,

I am considering using this part in a new design that I am working on.  Unfortunately, the TID for this device is 75krad, the target TID for this mission is 100krad.  I've come back to this part because it has the highest total ionizing dose rate for this family of devices that I've found. 

Is there any documentation available that can describe how this device was verified?  Are there any plans to further qualify this device up to 100krad?

I am considering this part for a telemetry board, we have a lot of low frequency / DC telemetry points that we are interested in tracking to within a high degree of accuracy.  Sigma Delta ADC fits this need very well.  The target location for this mission is the Enceladus moon in the Saturnian system. 

Dave

  • 0
    TI__Genius 14540 points

    Hi Dave,

    Radiation reports for the ADS1278-SP are available in the product folder on ti.com.  Below is the link for the TID report which describes the testing.

    http://www.ti.com/lit/rr/sbak008/sbak008.pdf

    However, I just noticed the datasheet states 75krad but the report is preliminary and states 50krad.  I will consult with the radiation team to understand if a final report is available.  The published report, nevertheless, describes the testing methodology.

    Thanks

    Christian

    Thanks

    Christian

  • 0 in reply to Christian Yots
    TI__Genius 14540 points

    I have not received clarification from the radiation team on this issue.  I will continue to push for clarification and let you know once I know something.

    Thanks

    Christian

  • 0 in reply to Christian Yots
    TI__Genius 14540 points

    Hi Again,

    I confirmed with the radiation team that 50 krad was TID performance for the report that is published.  With 75 krad exposure, the devices remained functional but after an annealing time period.  A second batch of samples are being retested at 75krad.  We expect this testing to be complete in about 8 weeks after which an updated TID radiation report should be published shortly after.

    Thanks

    Christian