Shabaz, Google "Books on Signal Integrity", and "Books on Power Integrity". Signal Integrity/Power Integrity are fields of study that require a great deal of time and effort on the part of the practitioner. There is no simple answer to your question. Best to start reading right away. Ken -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Shahbaz Assad Sent: Wednesday, September 08, 2010 2:27 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] What does it means my Power Plane Impedance Hi Experts, What does it means by power plane impedance while doing Power Integrity analysis. The power plane impedance is kept at mili ohms for a wide range of frequencies for better PI. Kindly guide me 1. what does it means by power plane impedance? 2. what should be its nominal value? 3. For better PI, should its value be as small as possible like 2mOhms? 4. if yes? what is the reason. Thanks In advance. I am new to SI and PI Thanks, Shahbaz Assad System design Engineer - WhizzSystems, Inc. _____________________________________ Skypes ID: sassad85 | sassad@xxxxxxxxxxxxxxxx ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu