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liletian Community Member Offline Posts: 97 MD	MOSFET LEVEL 1&2 verilogA model help! Mar 21^st, 2010, 11:50am Hi Guys I am interesting in a simple verilogA mosfet model like level 1or 2. It looks like the level 3 is a little too complicated in the code. Can anyone share their level 1 and 2 verilogA code, I will greatly appreciate it. Thank you, B
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Andrew Beckett Senior Fellow Offline Life, don't talk to me about Life... Posts: 1742 Bracknell, UK	Re: �MOSFET LEVEL 1&2 verilogA model help! Reply #1 - Mar 22^nd, 2010, 8:15am If you have the Cadence IC tools, then there is a cell "mos_level1" in ahdlLib. ahdlLib can be found at: <ICinstDir>/tools/dfII/samples/artist/ahdlLib Regards, Andrew.
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liletian

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Re: ��MOSFET LEVEL 1&2 verilogA model help!
Reply #2 - Mar 22^nd, 2010, 10:33am

thanks, it looks ok. However, is there a model include the capacitor effect? like level 2 model?
thank you

Andrew Beckett wrote on Mar 22^nd, 2010, 8:15am:

If you have the Cadence IC tools, then there is a cell "mos_level1" in ahdlLib. ahdlLib can be found at:

<ICinstDir>/tools/dfII/samples/artist/ahdlLib

Regards,

Andrew.

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Geoffrey_Coram

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Re: ��MOSFET LEVEL 1&2 verilogA model help!
Reply #3 - Mar 22^nd, 2010, 12:07pm

liletian wrote on Mar 22^nd, 2010, 10:33am:

thanks, it looks ok. However, is there a model include the capacitor effect? like level 2 model?

I would have said that level=1 has some capacitance, but it's not in the verilog-a code Andrew mentioned (well, OK, there's diode depletion capacitance, but no channel charge equations). My sense, though, is that the capacitance equations in levels 1 and 3 are very close, if not the same, and you thought the level 3 equations were too complicated.

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liletian

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Re: ��MOSFET LEVEL 1&2 verilogA model help!
Reply #4 - Mar 22^nd, 2010, 12:21pm

Hi
It looks like my machine can not compile level 3 correctly. Is there other level 3 mosfet code?
Bests,
B
Geoffrey_Coram wrote on Mar 22^nd, 2010, 12:07pm:

liletian wrote on Mar 22^nd, 2010, 10:33am:

thanks, it looks ok. However, is there a model include the capacitor effect? like level 2 model?

I would have said that level=1 has some capacitance, but it's not in the verilog-a code Andrew mentioned (well, OK, there's diode depletion capacitance, but no channel charge equations). �My sense, though, is that the capacitance equations in levels 1 and 3 are very close, if not the same, and you thought the level 3 equations were too complicated.

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Geoffrey_Coram

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Re: ��MOSFET LEVEL 1&2 verilogA model help!
Reply #5 - Mar 23^rd, 2010, 9:59am

liletian wrote on Mar 22^nd, 2010, 12:21pm:

�Hi
�It looks like my machine can not compile level 3 correctly.

Did you download the updated mos3 code that Marek posted in your other thread?

http://www.designers-guide.org/Forum/YaBB.pl?num=1268789424#13

Did you use the correct command to include it in your netlist?

Have you tried including the mos level 1 code to be sure you can get Verilog-A code in your netlist?

What error messages are you getting now?

I'm not aware of other mos3 code that's easily available.

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