Cadence® system design and verification solutions, integrated under our System Development Suite, provide the simulation, acceleration, emulation, and management capabilities.
Verification 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.
I am facing problem in adding noise in transient analysis in cadence spectre .
Can help me how to add noise as input source for transient analysis using simulator cadence spectre .
In reply to Andrew Beckett:
In reply to Analog Design:
I wan to do transient analysis by noise
signal in cadence spectre(version 5.4). Means I wan to give noise
signal as vsource .Then ,how would it can be made a noise source which
act as vsource(or vpulse type) for transient simulation . Or is there
any other approach to do this noise analysis in transient analysis .
Can any1 help me ?
First of all, please write full English words. You are not paying by the character here, so there is no need to abbreviate proper English words to "u" or "ur" or "any1". My natural inclination is to ignore any post written using such "text speak" because it is so difficult to comprehend - and even more so if English is not your first language (which is fair enough) and so I have to compensate for that too.
I merged all the different posts together on this. Asking the same question again (with no more information than the first time) is unlikely to increase your chances of getting an answer quickly. Given that everyone here is answering these forum questions as a community activity, the more detail and precision you can give, the better.
I already explained how to do this, so I am at a loss to know what the problem is. You did not say what you'd tried and what exactly did not work.
It's as simple as this:
That's it. Not hard. If this doesn't work, please explain precisely (using real words) what you were doing, what happened, what version of the IC environment and what version of spectre you were using, and any error messages that were given.
First of all, the Forum Guidelines say that you should not append new questions onto an existing, old post.
You can do what you want using Verilog-A. This has functions to generate white and flicker noise with coefficients, which should allow you to get the kind of shaping you want.
how to create a noiseless resistor instance in spectre ac noise analysis?
In reply to Songshu:
Putting aside the fact that you didn't read the previous entry in the post telling the previous appender not to append an old thread (especially when your question is not about noise files nor is it about transient analysis), as covered in the forum guidelines, you can do this by using the "isnoisy" parameter on a resistor (in analogLib this shows up as "Generate Noise" or something like that).
Alternatively there is (in recent IC versions in conjunction with recent MMSIM versions) a field on the Simulation->Options->Analog form which allows you to specify which devices do or don't include noise.
In reply to HamidKhatibi:
Which version of the IC tools and MMSIM tools are you using? Type "virtuoso -W" and "spectre -W" in the UNIX terminal window to find out...
It would be at the bottom of the Main tab on the Simulation Options Analog form, as shown in the picture.
Thank you for your answer. I do not have this option!
Is there any other way to do that?
You're using too old a version of spectre. You're using a bang up to date version of the IC tools, but are 3 major releases back on the simulator... there have been MMSIM10.1, MMSIM11.1 and MMSIM12.1 in the meantime. I suggest you move to the latest MMSIM12.1 hotfix.
With this, you can do what you want.
Thank you very much Andrew.
I should talk with my advisor :-)
Meanwhile, is there any other way to turn off some device's noise?
Not really. Some models and devices have the ability to turn off noise - e.g. resistors have an isnoisy parameter. In general you'd need this enhancement.
It does seem odd to use a very up to date IC version and a (at least) 3 year old simulator release. Normally people stay more up to date with the simulator than the IC release!
I see. I will definitely try to update it then :-)
Thank you very much,