Importing SPICE models for some ICs into Multisim

  • Thread starter Thread starter AMRITHAPRIYA K K
  • Start date Start date
  • Tags Tags
    Schematics
Click For Summary

Discussion Overview

The discussion revolves around the challenges of importing SPICE models for integrated circuits (ICs) into Multisim for simulation purposes. Participants explore the feasibility of using SPICE models for specific ICs, particularly the 74LV4051PW (8:1 MUX), and seek guidance on the import process.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant expresses the need to simulate certain ICs in Multisim and requests help with importing SPICE models.
  • Another participant suggests that importing should be possible and asks which ICs are needed and what similar ICs are available in Multisim.
  • A participant specifically mentions the 74LV4051PW and requests steps for importing its SPICE model.
  • There is a question about the desired level of simulation, whether functional/digital or full-resolution SPICE simulation.
  • One participant notes that an accurate model for the 74LV4051PW may require defining a .subckt and understanding the characteristics of the MOSFETs used.
  • Another participant suggests that it might be easier to simulate the circuit with SPICE.
  • There is a clarification that if the simulation is only at a functional/digital level, a full SPICE model may not be necessary.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the best approach to import SPICE models into Multisim, and there are differing opinions on the necessity of a full SPICE model for functional/digital level simulations.

Contextual Notes

Participants have not provided specific details on the steps required for importing SPICE models, and there are unresolved questions regarding the characteristics needed for accurate modeling.

AMRITHAPRIYA K K
Messages
3
Reaction score
0
We need to simulate certain schematics in MULTISIM but we are not able to do it since some of the ICs are not available in MULTISIM. We have got the spice models for some ICs. Will it be possible for anyone to help with the steps of importing spice models in MULTISIM?
 
Engineering news on Phys.org
Welcome to PF.

It should be possible without too many problems.
What ICs do you need to convert?

What similar ICs are available in MULTISIM now?
 
I require many ICs for simulation . For few of them I got spice models but I am not able to import it. One of them is 74LV4051PW(8:1 MUX). Can you provide me with the steps?
 
AMRITHAPRIYA K K said:
I require many ICs for simulation . For few of them I got spice models but I am not able to import it. One of them is 74LV4051PW(8:1 MUX). Can you provide me with the steps?
At what level do you want to simulate your circuits? At a functional/digital level, or a full-resolution SPICE simulation?
 
AMRITHAPRIYA K K said:
One of them is 74LV4051PW(8:1 MUX).
Do you have a spice model for that?

I believe you will need to define a .subckt that can be imported.

The 4051 is a 1/8 analog bidirectional switch. It is made from CMOS, MOSFET transmission gates. I expect an accurate model will require you to identify the characteristics of the MOSFETs employed.

Alternatively, you mighty define it as a macro array of SPST switches.

Sometimes it is easier to simulate a circuit with spice.

https://www.multisim.com/help/components/creating-custom-component-models/
 
berkeman said:
At what level do you want to simulate your circuits? At a functional/digital level, or a full-resolution SPICE simulation?

functional/digital level only
 
Last edited by a moderator:
AMRITHAPRIYA K K said:
functional/digital level only
Then you don't need a full SPICE model, do you?
 

Similar threads

DC 20kV flyback converter schematic in multisim
  • · Replies 15 ·
Replies
15
Views
5K
Create Variable Inductance in SPICE
  • · Replies 1 ·
Replies
1
Views
5K
IC Physical Design Software Inquiry
  • · Replies 11 ·
Replies
11
Views
2K
Mike Engelhardt, LTspice, and S·P·Q·R
  • · Replies 1 ·
Replies
1
Views
3K
Understanding an Inverter Simulation
  • · Replies 26 ·
Replies
26
Views
4K
Understanding Multisim Simulation Results: Schematic and Oscilloscope Analysis
  • · Replies 9 ·
Replies
9
Views
3K
What's wrong in my LTspice simulation of an Op-Amp integrator circuit?
  • · Replies 9 ·
Replies
9
Views
7K
Using delicate 5V IC to toggle 12V device with MOSFET, Diode, resistor
  • · Replies 8 ·
Replies
8
Views
2K
How much do you trust your software?
  • · Replies 5 ·
Replies
5
Views
2K
Designing a Simple SMPS Power Supply: Utilizing an Astable Multivibrator Circuit
  • · Replies 4 ·
Replies
4
Views
3K