At 06:50 AM 11/2/2008, you wrote:
Dear Electric buglist,
I'm having a problem with MOSFETs when using the "Analog" technology
option (actually it seems to be the choice of SCMOS rules rather
than Submicron rules in the ProjectSettings->Technology
menu). Electric thinks the width of some transistors is 2 lambda
bigger than it really is.
If I instantiate the P-Transistor-Scalable or N-Transistor-Scalable
I get a MOSFET with a width of 3 lambda and the active region under
the poly is correctly drawn at 3 lambda. However, if I use the
plain P-Transistor and N-Transistor components and check the
properties of the transistors the width will be reported as 5
lambda, even though the transistors are drawn with an actual width
of 3 lambda. The offending transistors are also drawn with a 3
lambda extension of the gate rather than 2 lambda.
Moving the cursor over these transistors shows that Electric thinks
the pin in the channel is extended 1 lambda beyond the active at
each end, only for the plain transistors.
Deselecting the "ProjectSettings->Technology->Analog" option and
changing from "SCMOS rules" to "Submicron rules" appears to fix the problem.
I'm using Electric 8.07 on Red Hat Enterprise 4 linux with java
version 1.6.0_07. Am I doing something wrong here, or overlooking something?
You have found a bug in Electric that was fixed in September. If
this particular transistor configuration is necessary for your work,
contact me and I will discuss ways to fix it. Otherwise, our next
release, due out before the end of the year, will correct this problem.
-Steven Rubin
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