[ibis-macro] Re: Suggestion for a new macro library element
- From: "Ken Willis" <kwillis@xxxxxxxxxxx>
- To: <arpad.muranyi@xxxxxxxxx>, <ibis-macro@xxxxxxxxxxxxx>
- Date: Thu, 2 Feb 2006 13:18:27 -0500
Hi,
We use the VI scaling quite a bit in our SPICE-based behavioral
MacroModeling,
and have found it very useful.
Ken
-----Original Message-----
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Muranyi, Arpad
Sent: Thursday, February 02, 2006 12:05 PM
To: ibis-macro@xxxxxxxxxxxxx
Subject: [ibis-macro] Re: Suggestion for a new macro library element
Hello everyone,
Paul's question raises another thought in my mind.
We talked about adding scaling coefficients to the IBIS buffer building
blocks in the macro model library a long time ago. In the heat of
discussing bugs with with the vendors and trying find solutions for them
I completely forgot about them in my coding.
Paul question reminded me to this discussion and as far as I remember we
said way back when that we should implement static scaling coefficients
for the I-V curves to be able to scale the buffer strength, and perhaps
another static coefficient to scale the time axis of the V-t curves to
be able to scale the edge rate of the buffer.
This would be relatively easy to implement, but before I did anything I
would like to confirm once more whether I should do it. Please comment.
I would also like to encourage everyone to respond to Paul's question.
An element like that can be added easily. The question in my mind is
whether it is viewed as a practical addition, and whether substitution
for SPICE-only vendors is an issue or not. (I believe they could use a
subcircuit to contain the 8 sources).
Thanks,
Arpad
==========================================================
-----Original Message-----
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Paul Fernando
Sent: Wednesday, February 01, 2006 3:31 PM
To: ibis-macro@xxxxxxxxxxxxx
Subject: [ibis-macro] Suggestion for a new macro library element
Right now scaling is done by instancing 8 current sources in each
template, for each buffer that is scaled. For example, when modeling a
4-tap pre-emphasis bufer, 3*8 current sources must be instanced.
I suggest we lump them (the 8 current sources) into a macro library
element.
Looking forward to your feedback.
Regards,
Paul
---------------------------------------------------------------------
IBIS Macro website: http://www.sisoft.com/ibis-macro IBIS Macro
archives: //www.freelists.org/archives/ibis-macro
To unsubscribe send an email:
To: ibis-macro-request@xxxxxxxxxxxxx
Subject: unsubscribe
---------------------------------------------------------------------
IBIS Macro website: http://www.sisoft.com/ibis-macro IBIS Macro
archives: //www.freelists.org/archives/ibis-macro
To unsubscribe send an email:
To: ibis-macro-request@xxxxxxxxxxxxx
Subject: unsubscribe
---------------------------------------------------------------------
IBIS Macro website: http://www.sisoft.com/ibis-macro
IBIS Macro archives: //www.freelists.org/archives/ibis-macro
To unsubscribe send an email:
To: ibis-macro-request@xxxxxxxxxxxxx
Subject: unsubscribe
Other related posts:
