本帖最後由 smilodon 於 2011-7-30 05:54 PM 編輯 7 c+ s6 U: q2 Q2 b 9 p6 k* m! Y: w# r( l! tBasically you can find information in design rule about metal width versus current, 1um - 1mA is a conservative estimation. 2 E2 V& C4 z: r6 i4 `3 t8 O : g h w& H! Y% P. F8 @Usually I prefer a 10um width metal to five layer metal connected by vias, for fringe caps' and routing.