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DAC8811 Specification Questions

Tim Canales
Prodigy 60 points
Other Parts Discussed in Thread: DAC8811

The spec for the DAC8811 displays a typical DAC Glitch Impulse (Figure 10) and a corresponding specification of 2nV/s (page 6).  Shouldn't be expressed in nV-s.  Also on page 6 is a specification for Digital Feedthrough, 2nV/s.  Same concern, shouldn't this be expressed in nV-s?  Is there any additional information available on the digital feedthrough response?  For instance is it an output transient that occurs on each SPI clock edge?

  • 0
    TI__Genius 10615 points

    Hi Tim,

    Tim Canales said:
    The spec for the DAC8811 displays a typical DAC Glitch Impulse (Figure 10) and a corresponding specification of 2nV/s (page 6).  Shouldn't be expressed in nV-s.  Also on page 6 is a specification for Digital Feedthrough, 2nV/s.  Same concern, shouldn't this be expressed in nV-s?

    You are absolutely correct on this one. I will add it to the future change log for this datasheet. Thank you very much for letting us know.

    Tim Canales said:
    Is there any additional information available on the digital feedthrough response?  For instance is it an output transient that occurs on each SPI clock edge?

    Unfortunately we don't have any more information readily available. We do spec this at the output, so there should be a small glitch at the output during the SPI edges. I am currently attending a week long conference out of town. I am unable to take these measurements until later next week, but I can do that for you for each of the SPI signals when I'm back in town.