This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADC128S102QML-SP: ADC128S102QML-SP sparkle code

Part Number: ADC128S102QML-SP

January 23rd 2020 there was an Application Advisory released that depicted the possible occurrence of sparkle codes under certain input voltage conditions.There is a table in the Application Advisory with some empirically observed results. According to this table, a negative sparkle code is only observed at ~3/4 from the full scale, all other potential sparkle codes going in the positive direction. But as this table is based on empirical results, it is not clear if the direction of the sparkle codes can be considered as systematic. In particular, could negative sparkle codes potentially be observed at 1/16, 1/8, 1/4, 1/2 or 5/8 input levels?

Thank you.

David

  • Hello,

    This is a great question. Below is a table that shows a more comprehensive list. We have found that the sparkle code value will always be the same for each input value. 

    You can also see that there are some input values that result in a "negative" sparkle code

    Vin/Vref ratio

    Code Transition

    Sparkle Value

    1/16

    0x100 - 0x0FF

    0x1FF

    2/16

    0x200 - 0x1FF

    0x3FF

    3/16

    0x300 - 0x2FF

    0x200

    4/16

    0x400 - 0x3FF

    0x7FF

    5/16

    0x500 - 0x4FF

    0x5FF

    6/16

    0x600 - 0x5FF

    0x400

    7/16

    0x700 - 0x6FF

    0x600

    8/16

    0x800 - 0x7FF

    0xFFF

    9/16

    0x900 - 0x8FF

    0x9FF

    10/16

    0xA00 - 0x9FF

    0xBFF

    11/16

    0xB00 - 0xAFF

    0xA00

    12/16

    0xC00 - 0xBFF

    0x800

    13/16

    0xD00 - 0xCFF

    0xDFF

    14/16

    0xE00 - 0xDFF

    0xC00

    15/16

    0xF00 - 0xEFF

    0xE00

    Regards

    Cynthia