At 01:25 AM 9/27/2006, you wrote:
I am working on a bandgap reference circuit as a test case using
Electric schematic and net listing. I have some questions occuring
in a real design environment.
1. How can I change the model name of a component? For example, NMOS
has 'N' as model name when netlisted. I would like to have 'nch'
instead. (The spice model file has 'nch' as a name and I would not
like to modify it. And I would not like to change netlist file all the time.)
There is no way to change the actual NMOS transistor component to
emit a different letter. However, you can create your own spice
primitive and instruct it to emit any sequence of characters. See:
http://www.staticfreesoft.com/jmanual/mchap09-04-04.html
2. Is it possible that I have real transistor dimension (like 0.2u
or 0.2) instead of multiples of lambdas (1 when lambda is 0.2u) of technology?
By default, Electric uses real dimensions (writing 0.2u). You can
disable this in the Spice Preferences by checking "Write Trans Sizes
in Units" (note that Electric no longer uses the term "lambda", but
instead calls them "units").
3. Is it possible to display the instance name of a component (like
MN1, [EMAIL PROTECTED]) in the schematic?
Every node and arc in Electric has a name. When first created, they
are given automatic names such as "[EMAIL PROTECTED]" which are not
displayed. If you change the node or arc's name, then it is
displayed (and used in Spice).
-Steven Rubin
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