Questions tagged [allegro]
Allegro is PCB design software by Cadence.
55 questions
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How can I cut a PCB in half and shift all traces, vias, components, shapes in Cadence Allegro PCB?
I'm fairly new to Cadence Allegro. I need to extend a board in the X direction.
How can I select everything in all layers (outline, traces, shapes, vias, components) and move/offset in the X direction?...
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Cadance to Altium Conversion - Is it Hard?
Does anyone know how much work is required to convert Cadence PCB design files to Altium importable files? I've been told it's the equivalent of 2-3 months of work. I'm slightly dubious but I'm ...
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Allegro current sensors on 220 VAC mains
A friend is designing a power meter for 220 VAC mains and is considering Allegro current sensors like the ACS37002 or ACS71240. Those sensors put a wire with a sub-ohm resistance in line with the ...
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Conversion from Allegro *.brd to *.alg
Can anyone who works with Cadence Allegro convert a *.brd file to *.alg ?
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2D mapping of PDB Layout in Allegro
I am trying to export a 2D drawing of my pcb layout in allegro. I would like the layout to include the components and their reference designators. However, I cannot find a way to do so and the ...
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Allegro .brd to Altium PCB conversion
I have a PCB file that is in .brd (Allegro) format. I gave that to a manufacturer who was not able to open because he uses Altium and asked me to convert the file. Is this possible? I have looked on ...
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Getting Energy values from the Allegro ACS37800
I am currently using the Allegro ACS37800 IC to monitor power, from what I found on the datasheets and from the internet this IC is capable of calculating the voltage, current, and power. I actually ...
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OrCAD/Allegro PCB design
I am required to design a PCB in Allegro for this circuit:
The problem is that our teacher believes that we have too much free time so our introduction into Allegro was close to none. I have searched ...
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Cadence Allegro/PCB Editor: Change mechanical pin to electrical pin
Inside a package/footprint I accidentally deleted the texts of the pin numbers. Thus the electrical pins became mechanical pins. Can I somehow reverse this process and change the mechanical pins back ...
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Altium: Imported PCB, vias do not make contact with plane (polygon pours)
I imported PCB design files into Altium from Allegro.
I noticed that some of the vias look like the following, where blue is the GND polygon, and the GND net via does not connect to it at all.
The ...
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OrCAD PCB Designer (allegro) star meaning (*) in symbols
Sometimes symbols include a (*) as text as part of the symbols land pattern.
Like in the following image, what is that intended for?
I have noticed that on the Package editor, the start symbol appear ...
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Measure pad size on Allegro Free Viewer 17.4
I need to measure the pad size(length and width ) of an IC pad.
May I know how to do the same in Allegro
I have highlighted one pad for your reference.
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Buck converter voltage breaks down with load A4403
I am currently working on a Buck Converter that should charge my battery pack 4S2P.
The problem is that by increasing the load the voltage is dropping, and with 450 mA (depending on the value of the ...
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Difference between different solder mask classes
I use Cadence Allegro 16.6V for PCB designing. We have option to use solder mask sub class from different classes like "Board geometry" and "package geometry".
I know that "...
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Import DXF defined padstacks in to Allegro/Orcad PCB
I'm using Orcad PCB Professional 17.4-2019 S017
I've got a symbol with some funky pads on it, one the padstack editor cannot generate.
Here's where I'm trying to get to. Green is mask boundary, blue ...
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How can I add reference return path via (ground via) in a symmetric way in PCB Editor?
I would like to add symmetric via (return path via in the middle) using PCB Editor as shown below.
I can add via manually. I just wanted to make sure it is symmetric to the two diff-pair fanouts as ...
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What is no-probe-top in Cadence OrCAD
There is a rectangle around the outside of my OrCAD footprint (pointed to with the blue arrow), and it is on the no-probe-top layer. I googled it but I couldn't find any explanation of what that layer ...
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Current / power measurement using ACS71020
I am having some hard time in understanding and comprehending the value for ACS71020 current and power measurement. In the manual, rms_avg_1 and rms_avg_2 has been mentioned stating that "The
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How to rename the layer name in PCB Editor?
How can I can edit or change the following layer name?
I am a self learner of PCB editor. I was trying to design the copy of a file I already have (A reference board file). The below picture is the ...
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Reading registers from ACS71020 over SPI
I'm trying to read registers from current-sensing chip ACS71020 connected over SPI.
This is how I initialize the SPI:
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347
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OrCAD Schematic cleaner option
I am using 16.6V Allegro.Is there any option on OrCAD Capture CIS for beautifying Schematic?
For example, say,
I have entered a schematic with irregular wires and used long wires. Is there any ...
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How to draw/include ESD susceptibility symbol on my designs?
I am using Allegro 16.6V.
I want to draw/include ESD susceptibility, non-recyclable and recyclable symbols on my design.
How can I do this?
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OrCAD: Uniqueness/Scope of Net Aliases, Busses, and Net Groups, Hierarchical Ports, and Off-page Connectors
I am using Allegro/OrCAD Capture. I need some confirmation about the scope of some various types of nets in Allegro/OrCAD Capture, particularly with regards to hierarchical design and projects with ...
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Making Daughterboard Symbol and Footprint With Multiple B2B connectors
I am using Allegro/OrCAD.
Suppose I have a PCB module like the one below, which contains multiple B2B connectors and is meant to mount to be plugged into a larger PCB:
Each B2B connector has its own ...
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Allegro padstack not showing my pads
I have implemented a schematic for an IC (BGM13S32F512GA-V2R) and I am trying to create a footprint but when I try to place the padstacks, they do not appear in the default library... so I went into ...
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251
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Arranging multiple board files in single board file
I am going for PCB array manufacturing in order to save some costs. I have totally designed 3 different board files and I want to combine each of them side by side.
Can somebody tell me the steps in ...
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Dynamic phase Routing In Allegro
My doubt is regarding the dynamic phase control while routing differential pairs in allegro. If anyone knows kindly clear my doubts on these questions. For your reference, I have attached a snapshot ...
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Allegro OrCAD Capture: Crashing after DRC check [closed]
Issue: The OrCAD Capture software by Cadence is continually crashing. The version I have is SPB_16.5.
Problem: I can run ONE DRC check fine, however; when I run another DRC on my schematic, the ...
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OrCAD PCB Designer File Export to PDF (Gerber)
i want to export this PCB circuit to PDF exacty as it is (above image), but when i click on file -> export -> PDF, its shows exacty the window on the left "Allegro PDF Publisher", then i click on film ...
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IC Pins with adjacent same net need to be made as common shape?
Attached is the layout I am working on.
Please see the yellow circled area. It is a common net. I have kept it as separate trace in the layout for each pin. Is there any advantage by providing shape ...
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Difference between MOSFETs
I'm working on a 3 phase brushless, sensorless driver (Allegro A4960.)
I need to drive different motors in terms of power.
The voltage is 24V but the current per phase varies from 1A to 6A, so I'm ...
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485
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A4963 3 Phase Brushless Sensorless
I have to develop a driver for a 3 phase brushless DC motor @ 24V with max current per phase of 5A. I want to use an Arduino Zero for testing.
My idea is to use the Allegro A4963 IC. This is my first ...
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how to remove this error "ERROR 152: Port on instance does not exist in entity declaration for instance"?
I am new to Cadence Allegro HDL for schematic design and for my first design i got this error.
In 728 page document provided by cadence its is mention as follows,
"Open the symbol for the component in ...
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Allegro PCB design: How to set referenced center during Footprint making
I have designed the Pads from Orcad Pad designer. Now I would like to make footprint of my IC but to design that i need a reference center point so that i can decide location of pins. Please tell if ...
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Hot swappable stepper motor
We got a bulk of stepper motors, you can see specs on the following image:
I'm doing some work on my school laboratory, and they want me to test this motors to see which ones work and which ones ...
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EAGLE for 10 layer boards with 337-ball BGA?
I have been using EAGLE for some years. The boards I have designed had the following specs:
up to 4 layers
6 mil spacing
densest package: QFN, 0.4 mm pitch
only "ordinary" vias
mainly (low ...
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How to carry out signal integrity simulation with IBIS models
I need to determine if there will be high speed effects on the clock signal. I have not done such a simulation before.
I have the IBIS models of the circuit components involved. I think I still need ...
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Is it possible to edit gerber file using allegro?
I want make some corrections in gerber file. Is it possible using allegro? Or is any other better method to do it?
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How to fix line to line spacing error in Allegro?
I have a line to line spacing error in Allegro. I don't know how to fix it. If I make the width of the trace smaller, it gives me a line to width error. And I also don't understand Why I get this ...
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Problem with circuit cam, can't view my top layer?
I have a circuit laid out in allegro and I'll be milling it out on a board router. I'm using Circuit Cam to produce the files needed for the board router. I have three layers, a top layer, a bottom ...
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Allegro: How do I view the identifiers of all my components?
I'm using Allegro PCB editor to layout a board for a circuit that I'll be cutting out on a board router. In allegro PCB editor I just imported the netlist and I used quickplace to automatically place ...
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Pad with 4 pins in allegro cadence (orcad)
Sorry for silly question, but how to draw pad with four pins? It's not just a custom shape of pad, it has 4 pins.
Thanks
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Pin numbering in OrCAD?
I'm getting another error in OrCAD when I try to create the netlist. When I try to create the netlist I get this warning:
ERROR(ORCAP-36022): Pin number missing from Pin "DRIVE" of Package ...
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How to fix my warning in OrCAD?
I'm doing a schematic on OrCAD and when I did the Design Rules Check I got a warning that says:
Checking Electrical Rules
WARNING(ORCAP-1608): Net has no driving source N30274
I have a fairly ...
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How do I overlap wires in OrCAD capture without having the two wires have a node?
I'm doing a schematic for this in OrCAD capture CIS. In laying out my schematic I need to draw one wire going through another wire, but not necessarily intersecting with it via a node. When I drag a ...
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How to convert files from Cadence to Eagle CAD?
Is there any free software that can convert Cadence files (.dsn, .opj, .brd) into Eagle CAD files (.brd, .sch)?
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Where is Cadence's Allegro Design Entry HDL 16.5 Snap o Grid Option?
I am looking for the snap to grid option? Any idea how to enable it? I did try looking on Cadence forums and documentations, but I did not find anything.
Also any idea how I can move wires/...
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H-bridge output filtering
I'm driving A4952 motor driver with about 25khz PWM signal, with a simple coil connected as a load between OUT1 and OUT2. VBB is variable, testing with 15V but changing it doesn't alter the results.
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Programmatically generate padstacks for Cadence Allegro
I am laying out a complex board, with many components. One of the steps is to create padstacks for the footprints of each component. It turns out I have (nearly only) two types of padstacks to ...
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PCB footprint of Xilinx Kintex 7 FPGA [closed]
I am laying out a board with a Xilinx Kintex 7 FPGA (serial number XC7K70TFBG676). The first step is to create a footprint of the FPGA for my layout tool, the Cadence Allegro PCB Editor.
Does Xilinx ...
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