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I'm looking for a program that will perform schematic capture and mixed-mode (analog and digital) circuit simulation. If it also did PCB layout and routing, that would be a bonus, but not necessary. I currently use an old version of CircuitMaker/TraxMaker, but it's dated, and the simulation engine is a bit lacking. Windows or Linux, doesn't really matter.

What is a good program for this purpose?

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Not sure how active they are, but you may have better luck on electronics.stackexchange.com ... Just seen this - electronics.stackexchange.com/questions/1/… and electronics.stackexchange.com/questions/123/… –  William Hilsum Jan 3 '10 at 4:19
You're probably aware of spice and it's commercial variants, like hspice. –  pavium Jan 3 '10 at 5:06

6 Answers 6

up vote 2 down vote accepted

LTSpice from Linear Technology for simulation. KiCad for PCB

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You can try the following two links.

Electronics Lab


If you want to try for "PIC uC" micro controllers specially, you can get useful software from MicroChip, and also ask in their wiki.

I've some useful software but you will need more time & value to pay for these. So I don't share.

But "ORCAD" is not bad for normal users for schematic capture, mixed-mode (analog and digital) circuit simulation, PCB layout and routing.

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If you have content on www.microchip.com/wiki/ that you would like to share, please make a post on the Forum site in the appropriate thread. Forums can be found here microchip.com/forums/Default.aspx? –  Nargis Apr 2 '10 at 5:38

Try qucs:

Qucs is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit. After that simulation has finished you can view the simulation results on a presentation page or window.

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KiCad is a free schematic capture, PCB layout, gerber generator, etc package. Pretty capable and works decently well. It doesn't have built-in simulation, but I'd suggest LTSpice for that.

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Check out Xilinx (SP?). I remember they had a pretty good sweet a few years ago when I was in college. Requires either verilog or VHDL knowledge though, it won't just let you diagram it.

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Digital (specifically FPGAs) only, not analogue though. –  Martin Thompson Aug 3 '12 at 8:42

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