<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi Paula,<div class=""><br class=""></div><div class="">I have had good results using the Altium and Orcad tool suite for my BGA and DDR designs.</div><div class=""><br class=""></div><div class="">I usually look for the Fanout requirements for optimal layout from the Semi guys having come from Motorola / Freescale myself.</div><div class=""><br class=""></div><div class="">I don’t use the entire simulation approach as I need to hand route some EMI/RF compliant stuff by hand in many cases.</div><div class=""><br class=""></div><div class="">It really depends on what you are building of course.</div><div class=""><br class=""></div><div class="">Paula has a point of of using smaller design blocks for manageable testing and verification.</div><div class=""><br class=""></div><div class="">Happy New 2018</div><div class=""><br class=""></div><div class="">Terry Shultz</div><div class=""><br class=""></div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jan 2, 2018, at 11:39 AM, <a href="mailto:paula@synth.net" class="">paula@synth.net</a> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" class=""><div style="font-size: 10pt; font-family: Arial,Helvetica,sans-serif" class=""><p class="">I rarely use simulations, I've yet to find a good one. The problem with the simulators is that they're "too good" and don't get all the information and can lead you down rabbit holes.</p><p class="">I prefer to build in small blocks, schematic->PCB, then test each block, then put them all together.</p><p class="">Paula</p>
<div class=""> </div><p class=""><br class=""></p><p class="">On 2018-01-02 19:19, Roman wrote:</p>
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<div class="">Just when I thought this little topic that got out of hands was over, I spotted one line that brought my attention, quoted below. I can relate to that a bit. For most of the times I lay out a board without simulation and without schematics. So, there you go...</div>
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<div class="">Roman</div>
<div class="nh_extra"><p class="">Dnia 30 grudnia 2017 07:40 Michael E Caloroso <<a href="mailto:mec.forumreader@gmail.com" class="">mec.forumreader@gmail.com</a>> napisał(a):</p>
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<div class="">You laid out a circuit board with total faith in a simulation without</div>
<div class="">actually proving the design? BRILLIANT!</div>
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