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monte carlo simulation,corner simulation,PVT simulation

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present

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Anybody can tell me the difference between "monte carlo simulation", "corner simulation" and "PVT simulation"? Pls tell me what parameters they are varying?
Thanks.
 

yibinhsieh

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1. monte carlo simulation is used to simulate the mismatch effect to the circuits.
Usually, the width, VT, R, and C are varied to see what happen to your circuits.

2. corner simulation means process variation simulation. It's part of PVT.

3. PVT simulation: P stands for process, V stands for voltage and T stands for temperature.

Proces corner:
TT, FF, SS, FS, SF for MOS
max, min, typ for passive devices like C&R&L.
temperature: room, high and low.

Yibin.
 

    present

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present

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For corner simulation and PVT simulation, I think I know them already.
For monte carlo simulation, I was told it need the monte carlo model of the process.
I want to know that:
1. is monte carlo simulation for MOS transistors only? not applicable for bipolar transistors?
2. if I don't have the monte carlo model, what variables I should set? for the NMOS, PMOS, capacitor, resistor, ...?
the width, VT is for MOS, right?
R and C will be varied same as corner simulation, is it?

yibinhsieh said:
1. monte carlo simulation is used to simulate the mismatch effect to the circuits.
Usually, the width, VT, R, and C are varied to see what happen to your circuits.

2. corner simulation means process variation simulation. It's part of PVT.

3. PVT simulation: P stands for process, V stands for voltage and T stands for temperature.

Proces corner:
TT, FF, SS, FS, SF for MOS
max, min, typ for passive devices like C&R&L.
temperature: room, high and low.

Yibin.
 

present

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If I don't have the monte carlo model file, what are the variables I should set?
Thanks.
 

luojiexiaojun

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present said:
If I don't have the monte carlo model file, what are the variables I should set?
Thanks.
vth tox rsh in your lib file
 

wuwoze

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You have the TSMC 0.18 model card? It has Monte Carlo.
 

keoiuser

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Monte Carlo simu may be used for any circuit that can contain either MOS & bipolar.
If you don't have model you should vary the resistor, capacitor VTH ..

For corner simu, there is a variation of the transistor model & a variation of temperature and power supply, but in Monte Carlo you must fix your temperature & power supply and vary only the model of transistor.
 

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