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DAC80508: DAC80508

Part Number: DAC80508

Hello, I would like to have more specific information about the TUE. I noticed regarding the DAC80508 component that the TUE reported on the datasheet has typical values of 0.05% and maximum values of 0.1%FSR. I found on some documents that TUE is expressed as the square root of the sum of the squares of offset error, gain error, INL error, etc. By doing this calculation, I don't get the same value. Could I have some clarifications on this matter?

  • Hi Luigi,

    The square root of the sum method is a good way to estimate TUE for a device that does not have a specific TUE spec.  It is a some-what conservative method, but useful at times.  For a device that actually has a TUE spec in the datasheet, that TUE is actually measured.  In production we actually measure the DAC outputs, and log the most extreme error point.  Actual measured TUE is generally better than calculated TUE, because we usually dont see device with most extreme gain error, offset error, and INL at the same time.