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ad9854 gets so hot while working, selution

Discussion in 'Electronic Design' started by payam, Nov 22, 2003.

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  1. payam

    payam Guest

    according to ad9854 smd package get so hot
    any idea?
    thanks
     
  2. John Miles

    John Miles Guest

    Underclock it. I find that anything over 130 MHz or so is too hot for
    comfort. 200 MHz, the chip's rating, is China Syndrome territory.

    -- jm
     
  3. Either use a good 4-layer board with a large ground plane on ALL layers and
    plenty of vias UNDER the chip (each 1 to 1.5mm) to transfer the heat down to
    the bottom layer, or stick a small heatsink on the chip body. I've used
    these two techniques with a AD9852 with good results.

    Cheers,

    Robert Lacoste - ALCIOM : The mixed signals experts
    http://www.alciom.com
     
  4. maxfoo

    maxfoo Guest

    yeah, move to Siberia.
     
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