I have A/D devices on a board with High Speed components (2.4Gbps). From your experience, do you suggest to use an "analog ground" for the AGND connection or it is preferable to use the common ground plane and just try to locate the A/D to a quiet portion of the board. As for the VCC, does a pi-filter is a good idea? Thanks, -Steeve ------------------------------------------------------------------ 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 archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu