Hi Experts, I am designing 6 layer board with the mixed-signal RF tuner + digital demodulator, utmost care needs to be taken in the PCB routing of the analog blocks, grounding, placement and antenna placement/ground palne,Also i m using 0.5 MM pitch BGA package,so anyone can suggest that for bga package, what specification to be require in Layout. Like... via size,track width , tarck clearence.......and all important terms. So, i can follow the same criteria to reduce the noice beetween Analogue and Digital Section. All traces have to be simulated to have proper 50-Ohm impedance. Best Regards, Jweta Patel ------------------------------------------------------------------ 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