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soft:cadence:monte_carlo:start [2010/05/12 11:02]
dominik.przyborowski
soft:cadence:monte_carlo:start [2019/03/08 14:08] (current)
Line 31: Line 31:
 Finally run the simulations (green button on **run** toolbar). Finally run the simulations (green button on **run** toolbar).
  
-Gauss distibution requiere over 30 samples. So **number of runs** should be higher than 30. To see all results, change ** save data between 
 \\ \\ \\ \\
-**Remark** All simulations type (dc, ac, etc) and outputs are set on **Data View** in **Tests** branch. 
  
 +** Remark ** All simulations type (dc, ac, etc) and outputs are set on **Data View** in **Tests** branch.
 +
 +===== Phase Margin, GBW and open loop gain =====
 +Due to lack of corelations between instances on test bench, it is not possible to check above parameters in the standard AC simulations on replica circuits. \\
 +The solution is to run MC on //stb// analysis and use following expressions to obtain histograms of DC open loop gain, phase margin and gain-bandwidth product: \\
 +  - DC Open loop gain: <​code>​dB20(value(getData("​loopGain"​ ?result "​stb"​) 0))</​code>​
 +  - Phase Margin: <​code>​getData("/​phaseMargin"​ ?result "​stb_margin"​)</​code>​
 +  - GainBandWidth:​ <​code>​getData("/​phaseMarginFreq"​ ?result "​stb_margin"​)</​code>​
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