Hi Guys,(adsbygoogle = window.adsbygoogle || []).push({});

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,

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Pspice: derivative function in probe

Loading...

Similar Threads - Pspice derivative function | Date |
---|---|

Buck Converter (Step Down Chopper Derivation) | Jan 2, 2018 |

Spark gap switch and 2N6798 in PSPICE | May 11, 2016 |

What Vcc value should I typically use on an LM324 in PSpice? | Feb 16, 2016 |

[Solved] PSPICE Error when trying to run simulation | Feb 4, 2016 |

Problem with Pspice simulation | Sep 8, 2015 |

**Physics Forums - The Fusion of Science and Community**