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Cannot access individual noise contributions using SpectreMDL

Carmi

I have tried replicating the setup described in a previous post (here), with the proposed solution.

 

The MDL measurements return a value of 0 for all exported result but the first.

Using Viva I can actually see the correct value for each contribution.

I am using :
- Spectre 23.1.0.538.isr10
- Viva IC23.1-64b.ISR8.40

What should I do differently?

Thanks!

***** test.scs *****
r1 (1 0) res_model l=10e-6 w=2e-6
r2 (2 1) res_model l=15e-6 w=2e-6
vr (2 0) vsource dc=1.0 mag=1
model res_model resistor rsh=100 kf=1e-20*exp(dkf)
parameters dkf=0
statistics {
  process {
    vary dkf dist=gauss std=0.5
  }
}

noi (1 0) noise freq=1

/***** test.mdl *****/
alias measurement noi_test {
  run noi;
  export real noi_total=noi_test:out;
  export real r1_total=r1:total;
  export real r1_flicker=r1:fn;
  export real r1_thermal=r1:rn;
  export real r2_total=r2:total;
  export real r2_flicker=r2:fn;
  export real r2_thermal=r2:rn;
}

run noi_test

**** test.measure ****

Measurement Name   :  noi_test
Analysis Type      :  noise
noi_total             =  6.9282e-06
r1_flicker            =  0
r1_thermal            =  0
r1_total              =  0
r2_flicker            =  0
r2_thermal            =  0
r2_total              =  0

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