Cadence® system design and verification solutions, integrated under our System Development Suite, provide the simulation, acceleration, emulation, and management capabilities.
System Development Suite Related Products A-Z
Cadence® digital design and signoff solutions provide a fast path to design closure and better predictability, helping you meet your power, performance, and area (PPA) targets.
Full-Flow Digital Solution Related Products A-Z
Cadence® custom, analog, and RF design solutions can help you save time by automating many routine tasks, from block-level and mixed-signal simulation to routing and library characterization.
Overview Related Products A-Z
Driving efficiency and accuracy in advanced packaging, system planning, and multi-fabric interoperability, Cadence® package implementation products deliver the automation and accuracy.
Cadence® PCB design solutions enable shorter, more predictable design cycles with greater integration of component design and system-level simulation for a constraint-driven flow.
An open IP platform for you to customize your app-driven SoC design.
Comprehensive solutions and methodologies.
Helping you meet your broader business goals.
A global customer support infrastructure with around-the-clock help.
24/7 Support - Cadence Online Support
Locate the latest software updates, service request, technical documentation, solutions and more in your personalized environment.
Cadence offers various software services for download. This page describes our offerings, including the Allegro FREE Physical Viewer.
The Cadence Academic Network helps build strong relationships between academia and industry, and promotes the proliferation of leading-edge technologies and methodologies at universities renowned for their engineering and design excellence.
Participate in CDNLive
A huge knowledge exchange platform for academia to network with industry. We are looking for academic speakers to talk about their research to the industry attendees at the Academic Track at CDNLive EMEA and Silicon Valley.
Come & Meet Us @ Events
A huge knowledge exchange platform for academia. We are looking for academic speakers to talk about their research to industry attendees.
Americas University Software Program
Join the 250+ qualified Americas member universities who have already incorporated Cadence EDA software into their classrooms and academic research projects.
EMEA University Software Program
In EMEA, Cadence works with EUROPRACTICE to ensure cost-effective availability of our extensive electronic design automation (EDA) tools for non-commercial activities.
Apply Now For Jobs
If you are a recent college graduate or a student looking for internship. Visit our exclusive job search page for interns and recent college graduate jobs.
Cadence is a Great Place to do great work
Learn more about our internship program and visit our careers page to do meaningful work and make a great impact.
Get the most out of your investment in Cadence technologies through a wide range of training offerings.
Overview All Courses Asia Pacific EMEANorth America
Instructor-led training [ILT] are live classes that are offered in our state-of-the-art classrooms at our worldwide training centers, at your site, or as a Virtual classroom.
Online Training is delivered over the web to let you proceed at your own pace, anytime and anywhere.
Exchange ideas, news, technical information, and best practices.
The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information.
It's not all about the technlogy. Here we exchange ideas on the Cadence Academic Network and other subjects of general interest.
Cadence is a leading provider of system design tools, software, IP, and services.
Get email delivery of the Cadence blog featured here
In Virtuoso IC 6.1.5 ISR6, we released a new feature in ADE XL, which had been requested by many customers--the ability to define a measurement expression which operates on the results of another measurement expression across corners. For example, I can create an expression to measure, say, a delay. Call it "myDelay". Now I can create another expression which calculates, for example, the maximum value of "myDelay" over all the corners I ran.
To do this, I simply add an expression in the ADE XL Outputs Setup pane, give it a name (optional), and set the cyclic in the "EvalType" column (you were wondering what that new column was for, weren't you?) to "corners". The line will now be highlighted in blue to distinguish it from regular waveform and scalar expressions. Now create your expression. If you use the functions ymax, ymin, average, peakToPeak or stddev, the argument "?overall t" will automatically be added to the function to ensure the values are treated by the function as discrete, rather than continuous points.
It should be fairly obvious what the above functions do--you run a simulation over corners and you can find the max, min, average, spread (peakToPeak), and stddev of any scalar measurement over those corners.
Perhaps not so obvious is the fact that you can use other functions to measure across corners as well. For example, if you create a set of corners as a temperature sweep (remember, the definition of corners in ADE XL isn't restricted to PVT--you can create a variable out of pretty much anything and then sweep it in the Corners form), you can create a MAC expression using the cross() function to find the temperature at which an expression reaches a certain value:
cross(myDelay 200n 1 "either" nil nil)
Or you can use the value() function to find the value of an expression at an interpolated temperature value (or whatever variable you swept in your corners run):
MAC expressions are also supported for Monte Carlo analysis and Local and Global Optimization.
I'm sure you'll find this new feature useful. As always, comments and feedback are welcome!
Right now, it is not possible to pre-select which variable appears on the x-axis. You can change the x-axis of any plot by clicking RMB on the axis in the graph and choosing "Swap Sweep Var". We are working on an enhancement for 6.1.6 ISR9 in which you will be able to drag and drop variables and corners in the UI so you will be able to change which variable appears on the x-axis that way.
Is it possible to select which parameter is plotted on the X axis of a graph when a corner sweep is done across more than one variable? For example if I do transient sims for a circuit at different frequencies for each of 3 supply voltages, how can I make sure that when I plot the graph I get frequency on the X axis and not voltage?
We currently don't support measurements across sweep values. But you can always set up your sweep in the Corners UI instead and measure across corners that way. We are looking at measurements across sweeps as a future enhancement.
Hi, I would like to know if there are some functions that could operate across parametrical sweep. For example I'm going to define trimming not for concrete value but for temperature coefficient. So I'm doing parametrical sweep for dc temperature sweep, how could I get value of trim (that is in parametrical sweep ) for minimum TC (min (TC) across parametrical sweep). Thanks, Lena