You can't do much filtering on the USB lines due to signal integrity. We have achieved good results with careful attention to PCB layout (an adequete ground plane, don't even try 2-layer) and shielding, especially with the cable.
Darrell Locke Advanced Input Devices -----Original Message----- From: Dan Pierce [mailto:[email protected]] Sent: Wednesday, September 18, 2002 8:17 AM To: [email protected] Subject: Looking for good USB EMI suppression techniques Greetings: I am looking for a good design practice regarding USB transmission lines. I commonly have problems with 120.00MHz and 252.00MHz. Thanks in advance. Daniel J. Pierce Sr. Design Engineer OpenGlobe, Inc. > (An Escient Technologies Affiliate) 6325 Digital Way Indianapolis, IN 46278 mailto:[email protected] P: (317) 616.6587 F: (317) 616.6587 ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
