[SI-LIST] Re: 2 layer stack up with flooded ground and power

Ingo, AWT's Tx-line is not bad for a free calculator and does coupled MS 
lines.  If you want a dead-on answer, you will need a real 2D field 
solver.  That thick board will require pretty wide traces even if you go to 
CPWG, which Tx-line does not calculate diff pairs for.

Steve.
At 12:30 PM 3/30/2005 -0800, Ingo Kupper wrote:
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>Hello SI Community,
>
>                 I would like to get some ideas and/or link for impedance
>calculation for a differential pair on a 2 layer board.
>                 It's a little DVI adapter board - from FFC cable to DVI
>connector. It's about 3sq inch and should be cheap - therefore 2 layer.
>What stackup editor or TX line calculator is giving me the geometries
>for a differential pair on a top layer with a 60 mil core and top is
>ground flooded and bottom is VCC flooded (separation, spacing to ground
>flood, etc.)?
>                 =20
>                 Any help and direction appreciated!
>                 =20
>                 Thanks!
>
>
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