[SI-LIST] fields question
- From: Yoni Tzafrir <yonitz@xxxxxxxxxxxxx>
- To: "'board_design@xxxxxxxxxxxxxxxxx'" <board_design@xxxxxxxxxxxxxxxxx>,"Si-List (E-mail)" <si-list@xxxxxxxxxxxxx>
- Date: Mon, 27 Jan 2003 14:18:48 +0200
hi,
it's a simple question:
i have a PCB with several line e.g. :
----------------------------------------------------------------------------
----------------------------------------------------------------------------
- Z = 14.8mil
* /////// up power Plane ///////////
*
----------------------------------------------------------------------------
---------------------------------------------------------------------------
Z = 14.1mil
* Er = 4.2 H = 13.4mil
*
* bus1 bus2 bus3 bus4 bus5 bus6 bus7 bus8 bus9
bus10 bus11 bus12
* XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX
XXXXX XXXXX XXXXX XXXXX z=9.4mil
*
*
*
----------------------------------------------------------------------------
----------------------------------------------------------------------------
- Z = 0.7mil
* //// Bottom power Plane ///////////
*
----------------------------------------------------------------------------
---------------------------------------------------------------------------
Z = 0
all the lines are identical. let's assume the outer lines (bus1 and bus12)
have infinite space from the edge of the PCB. i want to put one line tied to
the ground (or VDD) while the others are toggled between +50mv to -50mv they
are toggled together. my question is where will this line suffer more from
mutual inductance, if it will be placed on the side (bus1 or bus12) or if it
will place in the middle (bus6 or bus7)?
Yonatan (Yoni) Tzafrir
*Tel: (972) - 3 - 7552300 (T/L: 351)
*Fax: (972) - 3 - 6177130
*Mobile: (972) -54- 459469
*E-mail: <mailto:yonitz@xxxxxxxxxxxxx>
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