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moisiad
Joined: 31 Mar 2004
Posts: 94
Helped: 1
Location: GREECE
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 26 Sep 2005 15:15 Behavioral models of Analog Blocks in Spectre - AMS |
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Hi
I am using both Spectre and AMS simulators. In order to run some fast simulations in large systems (e.g. PLL) i want to import some behavioral descriptions of basic circuits (PFD, Freq. divider).
As far as i know there are several "languages" in describing analog circuits (VerilogA, VerilogAMS, SpectreHDL). Can you please inform me for the following items:
1) Which of them are compatible with the above mentioned simulators?
2) Is there any tool to generate a behavioral description from schematic, or do i have to write the code?
3) Is is easy to modify a given behavioral description to an other (are there any tools) or it is done by hand.
Thanks
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sunking
Joined: 25 May 2004
Posts: 914
Helped: 46
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27 Sep 2005 3:36 Behavioral models of Analog Blocks in Spectre - AMS |
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1. sepctre support all
2. you can write the code or
the lib ahdl include many example
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pi331133
Joined: 09 Aug 2004
Posts: 46
Helped: 3
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05 Oct 2005 14:07 Behavioral models of Analog Blocks in Spectre - AMS |
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| There is a good sample uder the cadence installation directory/tools/dfII/rfLib, you can read the SpectreRF user guide first. This user guide discuss how to use Spectre/SpectreRF to simulate RF circuit and system in detail, there is also an example for behavioral simulation for PLL, with Verilog Language. I think you'd better refer to this first.
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skal81
Joined: 19 Jan 2005
Posts: 93
Helped: 16
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05 Oct 2005 15:39 Re: Behavioral models of Analog Blocks in Spectre - AMS |
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You can visit the following site http://www.designers-guide.org/VerilogAMS/. You'll find documentation, exemples, theorical articles.
BTW, I'm not sure but I think VerilogAMS needs a special licence, different from the Spectre licence. You should check it.
There is also a model generator in Cadence, but I never used it. I think it helps you get your code right.
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tlihu
Joined: 02 Jan 2002
Posts: 669
Helped: 5
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12 Oct 2005 8:38 Behavioral models of Analog Blocks in Spectre - AMS |
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| Does Cadence support VHDL-AMS?
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eda4you
Joined: 17 Sep 2002
Posts: 283
Helped: 17
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12 Oct 2005 8:41 Re: Behavioral models of Analog Blocks in Spectre - AMS |
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| tlihu wrote: |
| Does Cadence support VHDL-AMS? |
YES 
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eng_Semi
Joined: 03 May 2005
Posts: 339
Helped: 30
Location: Egypt
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12 Oct 2005 13:32 Re: Behavioral models of Analog Blocks in Spectre - AMS |
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| U also can use the verilog-A and verilog-AMS BUT u have to write the code, or u can use the pcell od generating the codes.
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rfsystem
Joined: 25 Feb 2002
Posts: 858
Helped: 96
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12 Oct 2005 15:24 Re: Behavioral models of Analog Blocks in Spectre - AMS |
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| VHDL-AMS for AMS Designer is planned but not released
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kjjian
Joined: 02 Dec 2005
Posts: 23
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02 Dec 2005 15:54 Behavioral models of Analog Blocks in Spectre - AMS |
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| plllib in cadence has some examples
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