Hi All, I have a general question: How does one check if the IBIS model provided has correctly generated data. I ask this because, I was recently working on a model which I thought was generationg unneccesarily high voltage levels (point-to-point). To test I had just connected the IO model I had to itself, without any interconnects in-between and found the voltages to be beyond the spec levels. I understand that the model impedance might not be matched to the load value the data was generated for, but was just wondering how one could make sure. Regards, Indira. -----Original Message----- From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org]On Behalf Of Muranyi, Arpad Sent: Wednesday, August 17, 2005 9:43 AM To: ibis-users@eda.org Subject: RE: [IBIS-Users] Mixed-Signal Analog IO ? If that's what you need to model a band gap device, you can also consider a pair of IV curves in the clamp tables. Those are always on, whether the model drives or receives, and you can make a voltage divider with two appropriately shaped and sized IV curves. Arpad =================================================== -----Original Message----- From: Tom Dagostino [mailto:tom@teraspeed.com] Sent: Wednesday, August 17, 2005 9:34 AM To: Lars Snith; Muranyi, Arpad Cc: ibis-users@eda.org Subject: RE: [IBIS-Users] Mixed-Signal Analog IO ? ... ... ... For a voltage output like the output of a band gap reference make a voltage divider using a terminator model whose values give you the Thevenin equivalent for the output impedance of the part you are trying to model. |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just 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 email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just 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 email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993Received on Wed Aug 17 10:51:42 2005
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