PSpice simulation vs temperature

[margyoala]

I am trying to define the sensitivity of a piezoresistance as a function of temperature using PARAMETERS. The equation is: {S=S0(1-TCS(temp-25))}.
The problem is that "temp" doesn't change during a Temperature Sweep, but I don't have any error either. Could you help me?

 

[Guybrush Threepwood]

last time I used spice (some time ago) i was supposed to define the limits for the temperature sweep in some file. maybe that's what's missing...

 

[mr_EE2002]

execusme, I will not answer you but I have a qustion


...what is the piezoresistance

 

[kiran_ks47]

Can anyone tell me how to use pspice simulation software for temperature analysis for resistor.

 

[Mike_In_Plano]

Piezoresistance is resistance that changes with stress. It's commonly used in IC based pressure sensors.

For the formula, I don't know of a direct call to pull up "temp" during a sim, but you can build a thermistor or temperature sensor model and use it. The extended call for a resistor is:

Rxxx Node1 Node2 Value TC=?

To make yourself a thermistor,
.subckt THERMISTOR TH1 TH2
R1 TH1 TH2 1K TC=.02
.ends THERMISTOR

Best of luck,

- Mike