Electrical – Alternative spice model of TI CD4066b

orcadsimulation

I'm busy working on a uni practical in which we are required to construct a chopper modulator and I'm busy creating a schematic in orCad to run some simulations. I'll be using a Texas Instruments CD4066b CMOS quad bilateral switch and was hoping to find a spice model on the TI site but unfortunately there isn't one. My question is what could I use as an alternative in orCad?

Best Answer

How about Simulating the CD4066 Quad Bilateral Switch With LTspice: http://www.embeddedcomponents.com/blogs/2011/12/cd4066-ltspice-simulation/? (archived link)

Or use faster switches with lower Ron here: http://www.analog.com/en/design-center/simulation-models/spice-models.html. Bipolar supplies are useful.

Maybe the ADG4613 but the reason they don't have a model was the specs were so loose and supply sensitive (old technology).

Related Solutions

Error when simulating spice model in OrCAD PSpice

A guess is that it might refer to the (analog) on this line:

 .SUBCKT TS522 1 3 2 4 5 (analog)

Try removing that and see if it works.

Checking further down, there is also a problem on this line:

 E1 50 40 51 0 1 E2 40 39 52 0 1

It should be:

 E1 50 40 51 0 1 
 E2 40 39 52 0 1

I just tried it in LTSpice with these two changes and it doesn't complain.

Electronic – How to modify spice transistor model

You can, rather easily, hand translate it. The biggest headache is making sure you've got the correct variables defined.

Going off of this: http://www.youspice.com/ys/bjtfromdatasheet.3sp

And comparing it to one of the LTSpice models that is in this: LTSpice

It looks like LTSpice follows the same conventions as PSpice models, so my assumption is that the model information housed in the LTSpice link is correct for more than just LTSpice (haven't tested against NGSpice, but it's just a Berkley Spice program so it shouldn't be any different), you just need to add a new BJT with those model parameters that are outlined in the links.

EDIT: Looking even further, even AIM-Spice has the same model setup for a BJT. I'm extremely confident that as long as you translate parameters correctly you can take any spice model and move it from one spice program to another, assuming it's at least using the basic Berkley Spice setup

Best Answer

Related Solutions

Error when simulating spice model in OrCAD PSpice

Electronic – How to modify spice transistor model

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