The loading condition will be similar to the R_fixture value used for
V/T curves. We also have recommended loading mentioned in BIRD95. One
such condition is 'no-load' as well.
BIRD95 allows maximum of 100 IvsT curves. Each can be under specific
user defined load as well.
- Syed
-- IBIS Vice-Chair & Webmaster Cisco Systems, Inc On Mon, 2005-01-24 at 00:46, Itzik Peleg wrote: > Hello Syed > > Sorry for my late replay. > > I am still missing something. What are the conditions to capture the > current? Capturing the current under some loading conditions can be > different from other loading conditions. How the captured current is > processed in order to yield the correct buffer loading on the power rail? > Please elaborate. > > Itzik > > -----Original Message----- > From: Syed Huq [mailto:shuq@cisco.com] > Sent: Sunday, January 09, 2005 12:01 AM > To: Peleg Itzik > Cc: IBIS Users > Subject: Re: [IBIS-Users] BIRD 95 Comments. > > Hi Peleg, > > Thanks for your comments on the 7th teleconf. Some responses in-line - > Syed > > > On Sat, 2005-01-08 at 13:37, Peleg Itzik wrote: > > > And back to BIRD 95: > > > > The current is measured with the resistance and inductance of the power > > supply rail of the pad. While the rising and falling v(t) table are > > measured with ideal supply. > > Isn't it better to measure the current on an ideal supply so the current > > is correlated to the voltage response that was capture in the rising or > > falling wave form. > > Please elaborate why the current is measured with the inductance and > > resistance. > > The L_xxx and R_xxx in the diagram are on-die parasitics. These are part > of the encrypted SPICE you may have. We wanted to show that these > components are present in your netlist as you make your measurements. > > These user is *not* placing any specific L_xxx or R_xxx to make these > measurements. > > We do want time coreelated V/T and I/T. Ideal supply maynot give you the > kind of SSN you wish to simulate. > > Regards, > Syed |------------------------------------------------------------------ |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 Mon Jan 24 09:25:48 2005
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