Hi Cathy: Standard IBIS covers just digital I/Os, terminators and series elements. I would use NC or some terminator model to stub off the analog pins because most EDA tools would not expect models on them or process them correctly. For some special cases you could use an IBIS buffer to mimic an expected analog output signal and impedance - such as for the output of an analog amplifier. Then a test analog waveform could generated for that pin for simulating the analog signal characteristics along its path. But I still recommend just stubbing off the analog pins for standard commercial parts to avoid confusion and unexpected signals. Bob Cathy Xu wrote: > Hi, > I'm not sure if IBIS supports analog I/O's. Should we model them the > same way > as digital I/O buffers or just put N/A's? We got some analog circuits > with 12V supply > and feedbacks on the outputs. > > Thanks, > Cathy > > -- Bob Ross Teraspeed Consulting Group LLC Teraspeed Labs 121 North River Drive 13610 SW Harness Lane Narragansett, RI 02882 Beaverton, OR 97008 401-284-1827 503-430-1065 http://www.teraspeed.com 503-246-8048 Direct bob@teraspeed.com Teraspeed is a registered service mark of Teraspeed Consulting Group LLC -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -------------------------------------------------------------------- |For help or to subscribe/unsubscribe, e-mail majordomo@eda-stds.org |with the appropriate command message(s) in the body: | | help | subscribe ibis <optional e-mail address, if different> | subscribe ibis-users <optional e-mail address, if different> | unsubscribe ibis <optional e-mail address, if different> | unsubscribe ibis-users <optional e-mail address, if different> | |or e-mail a request to ibis-request@eda-stds.org. | |IBIS reflector archives exist under: | | http://www.eda-stds.org/pub/ibis/email_archive/ Recent | http://www.eda-stds.org/pub/ibis/users_archive/ Recent | http://www.eda-stds.org/pub/ibis/email/ E-mail since 1993Received on Thu Feb 8 21:00:43 2007
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