Pspice: derivative function in probe

  • Thread starter ram0001
  • Start date
  • #1
5
0

Main Question or Discussion Point

Hi Guys,
I am stuck at a point and needs help.
The thing is I am doing MOSFET inverters using Pspice.
I am getting its VTC (voltage characteristic Curve) But I don't know how to get derivative of this curve in order to obtain some parameters required for Noise margin.
Here is the file:

.model NMOD NMOS (LEVEL=1, VTO=0.6 GAMMA=0 LAMBDA=0 KP=60U)
.model PMOD PMOS (LEVEL=1, VTO=-0.8 GAMMA=0 LAMBDA=0 KP=20U)

***********
* CIRCUIT *
***********

VDD 3 0 DC 3
VGS 1 0 DC 3
M1 2 1 0 0 NMOD L=0.8U W=2U
M2 2 1 3 3 PMOD L=0.8U W=10U
.OP
.DC LIN VGS 0 3 0.1
.PLOT DC V(2)
.PROBE
.END

I have 9.1 Student ,Demo version. I referred to user manual.... and it says I used use probe function 'd()' to get derivative but thats not working. It says invalid expressions.
I am taking 'd()' at 'V(2)'.
I would really appreciate if some one can help me out.
Thanks,
 

Answers and Replies

  • #2
5
0
I got it.
thanks
 

Related Threads on Pspice: derivative function in probe

  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
4
Views
3K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
4
Views
3K
  • Last Post
Replies
1
Views
2K
  • Last Post
2
Replies
25
Views
5K
Replies
15
Views
5K
Top