Qorvo QSPICE available (LTspice successor)




Do you know if this will be a stand alone simulator that can be plugged into a existing design environment?

I will register for the beta.

Thanks for the tip off


I guess if it’s as good as LTspice and licenses allow, someone will probably find a way to integrate it with KiCad as well.


LTSpice got a very reliable simulation engine; what I assume, by knowing Mike is that QSPICE will be definetly better. I think that KiCAD developers it is worth to check with him and see if such integration is possible.
This will be a big step forward…

LTSpice was not the best simulator engine, but its cost, enormous library and ease of adding third party parts made it dominant.
I will be interested to see what the licencing of Qorvo looks like



It’s not really a successor.

It’s just qorvo, a competing company to Analog/Linear has bought out the engineer and decided to make their own sales demo tool like ltspice. It still sounds entirely freeware (non open source) like ltspice because they intend to use it as a sales tool.

The fact they explicitly mentions windows 10 and 11 means it’s going to be a bigger rehash of ltspice than the dudes marketing pitch is leading on. Lol

We will not be integrating a feature that only works on one platform

Mind does that sometimes

LTSpice has been an unusually benign freeware because Linear and Then Analog treat it as a tool to sell chips. Qorvo have to make money, which means either they get bought by one of the handful of chip giants left or they go down the size crippled free tier and charge high licence prices for a useful version

I don’t understand the reasoning. LT and AD (now just AD) also need to make money, do they not?

If Qorvo starts to play the multi-tier game with a barely useful free version and a costly paid version, I predict it would be DOA and they won’t get anything good out of it. As an example, what fraction of engineers use TI’s simulator (was TINA, now a dumbed-down version of PSPICE)? A pretty TINY fraction…

Either way, it’s I agree that it’s odd. Qorvo is not exactly a household name. Maybe this is to get some name recognition. Probably cheaper than a PR blitz.


I mean, it is a PR blitz, they made a few acquisitions in the last 7 years and are trying to market their name.

Agreed, no real benefit, but folks like to speculate while they are waiting. At least, this folk does.

Agreed also that Mike has done a great job with LTSpice, and while I might complain here and there, it is my go-to circuit simulation tool for many years. In fact, I had a chance to talk to him directly at PCIM, and see him demostrate the new simulation tool. It looks very nice and quite fast, and the handling of digital code looks extremely fast, well thought out, relatively simple to use, and seamlessly integrated with analog simulation. Of course, the real test will be when I simulate my circuits on it.

However, I think it is fair to have some concerns about what the actual licensing terms will be. During my discussion, my understanding is that the final licensing terms will be along the same lines as LTspice, i.e. mostly unrestricted. However, what big companies giveth, big companies can taketh away. Time will tell.

In the meantime, ngspice also looks good, and there are no licensing games to worry about.





Hinting at using the .NET framework

Being multiplatform is hard work, Java never met its claims

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