Electronic design automation (EDA) tools are software packages to assist with electronic design. Common examples include schematic capture, PCB design, circuit anaylsis and chip level design tools.
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39 views
When using gEDA some components are ignored by the ratsnest. How should this be handled?
I have noticed that when running gsch2pcb to convert a gEDA gschem schematic to a pcb layout that certain components that are properly connected in the schematic are unconnected in the PCB layout. In ...
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0answers
35 views
IBIS model simulation with spice model
I am designing a Data acquisition system with a Texas instruments ADC, Inamps and a ST micro electronics micro controller. I am getting spice models for my inamps, differential amplifiers etc. so that ...
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3answers
155 views
Open Source verilog synthesizer
I'm looking for an open source verilog synthesizer. I am using Icarus Verilog as a verilog simulator. Originally I was going to use it for both simulation and synthesis, but found out the tool no ...
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2answers
259 views
How to Add the Xilinx Library to Modelsim
I'm trying to simulate an example design of an IP Core, but the version of ModelSim I have installed (Altera Edition/Linux) does not link to the Xilinx library. How can I permanently or temporarily ...
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2answers
118 views
Routing of an ASIC chip - time taken?
In a typical ASIC design cycle, how much time is taken by an EDA tool to complete the routing?
Assume a fairly complex chip (like the Ivy Bridge). I've heard the entire chip design cycle is typically ...
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1answer
60 views
How do you resize a part in PSpice?
I have a number of parts that I want to re-size so as to fit on paper. How would you resize a part?
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1answer
132 views
Is there a PADS version for students
I want to start learning Hardware design, and I want to start parcticing with PADS, is there any student version for this SW, if yes please tell me where I can find it.
thanks in advance.
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3answers
375 views
How to find a footprint?
I have just started using KiCAD (with no other experience e.g. in Eagle). I was basically able to put together a schematic and layout a board but I am struggling with some footprints. How would I ...
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1answer
1k views
Use sheet entries on Altium
I am trying to make a sheet entry to use ports to connect devices in different sheets as explained in this image:
But I am getting an error from Altium saying:
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3answers
4k views
How do I facilitate keeping multiple grounds, (i.e. AGND, DGND, etc…) separated in the layout when using Eagle?
I've designed several PCBs where I needed to keep the ground returns of different parts of the circuit separated, i.e. analog, digital and high power. I use Cadsoft Eagle for schematic capture and ...
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0answers
46 views
How to list all size_only cells in DesignCompiler
is there any way I can list all cells with size_only attribute?
get_cells -hier -filter "size_only==true"
is not working.
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votes
3answers
1k views
Spice Simulation Models?
Where can one go to find SPICE models? I am curious if there is a giant repository out there somewhere that I can search?
In particular, I am looking for a model for an LM317 voltage regulator, at ...
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3answers
415 views
Getting starting designing CMOS ASIC - What is the must have software?
What software should I use to design a pipeline of gates? The design will be implemented on TSMC's 350nm process. A list of must-have software to design a basic gate circuit, and ASIC solutions would ...
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3answers
610 views
Low-cost PCB prototyping
I work in a research lab where we occasionally need to develop electronic driver boards for quantum cascade lasers. The type of signal these handle are digital data streams up to around 10 MHz and ...
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3answers
155 views
Making Etchable PDFs in linux
Hey I am trying to make a etchable pdf for a project of mine. It is supposed to be a 2x9inch board. But I cannot find a good software to make this. Eagle's free version will not allow me to make this ...
3
votes
1answer
128 views
Do IBIS signal names need to be unique?
I don't see any reference in the specification that says so, but then I don't see anything that says otherwise. Other sections do talk about uniqueness, so I'm guessing they don't need to be unique.
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5answers
943 views
Schematic capture/PCB layout program recommendations
I'm still using PCAD2006 for my schematic capture and PCB layout. I'm not very happy with this; it is rather buggy, but it's a leftover for which I have an extensive library.
Due to the problems I'm ...
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7answers
3k views
Why is there such a strong preference for 45 degree angles in PCB routing?
I've always wondered this: every single modern PCB is routed at 45 degree angle increments. Why does the industry prefer this so much? Doesn't any-angle routing offer more flexibility?
One plausible ...
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29answers
14k views
Good Tools for Drawing Schematics
I was going to add a bit of information to my post on a previous day using schematics and some instructions. What programs are being employed for this purpose.
I mostly want to see what others are ...
