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resistor noise simulation by transient analysis

rfham

Hi,

I am trying to run the simple example as depicted in the attached image, taken from Cadence's "Virtuoso Spectre Transient Noise Analysis" document, page 24.
link is support.cadence.com/.../ArticleAttachmentPortal;pageName=ArticleContent&sq=005d0000005nSd1AAE_20173303123103

But, I am not able to implement the resistor (with the user defined parameter kf) as required here!
here is my setup and simulation process:
1>insert instance "res" from analogLib in schematic editor

2>change its "model name" to say "res_mod" and also made a model file (res.scs)


3>then added this model file from ADE->Setup->Model Path. The text put in this model file is:


simulator lang = spectre
model res_mod resistor rsh=1k kf=10e-13

4>set following parameters at "tran" analysis.

I am getting error of following

looks the circuit is not stable, and i searched the forum and found the same topic of following link. but i cannot find the final solution.

https://community.cadence.com/cadence_technology_forums/f/38/p/31559/1340473#1340473

could you help to check this? thanks a lot.

Parents
  • rfham

    hi, Andrew

    i got the new trans noise application note from cds website

    , and found the page 25 have the netlist as following:

    the netlist have two analysis, one is tran and another is tran noise,

    question one: how to set the two analysis above in one tran analysis GUI at ade explorer? i can set two test in ade assembler only like following figure

    question two: i cannot find the sweep_tran_noise-sweep, why not "tran"?

    how to add a_t_noisy- a_t expereesion, assembler can only add for test tran_noise or tran, cannot add this at high level.

     

     

    thanks a lot.

Reply
  • rfham

    hi, Andrew

    i got the new trans noise application note from cds website

    , and found the page 25 have the netlist as following:

    the netlist have two analysis, one is tran and another is tran noise,

    question one: how to set the two analysis above in one tran analysis GUI at ade explorer? i can set two test in ade assembler only like following figure

    question two: i cannot find the sweep_tran_noise-sweep, why not "tran"?

    how to add a_t_noisy- a_t expereesion, assembler can only add for test tran_noise or tran, cannot add this at high level.

     

     

    thanks a lot.

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