I have a question concerning the grounding of ADCs in a 100% differential system. What I mean by this is that the analog inputs AND digital outputs are all differential, for example the Analog Devices 9430. The digital outputs are LVDS, a constant current technology. Differential signalling is the traditional way to transmit signals between two systems whose grounds are NOT CONNECTED. So do I need to join analog and digital ground at all, save on the chassis and/or power supply circuitry? Many thanks, -- JP Nicholls / jpnicholls@xxxxxxxx Powerwave UK Ltd Embassy House Queen's Avenue Bristol, BS8 1SB United Kingdom Tel: +44 (0)117 910 5600 Fax: +44 (0)117 910 5601 Web: http://www.powerwave.com ___________________________________ The information in this communication and any attached documents contains confidential information of Powerwave Technologies, Inc. If you are not the intended recipient, or an agent responsible for delivering it to the intended recipient, you may not read, copy, distribute or use this information. If you have received this transmission in error, please notify the sender immediately by reply e-mail and then delete all electronic copies and destroy any hard copies. ------------------------------------------------------------------ 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