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 want to plot the phase noise of my closed-loop PLL where there were digital blocks in verilog and analog blocks in transistor level. I used AMS as the simulator, but I colud not find the PSS and Pnoise options in AMS. How colud I plot the phase noise diagrams of such kinds of mixed signal systems?
Thanks for your help!
In reply to Andrew Beckett:
I want to plot the phase noise of my closed-loop PLL
where there were digital blocks in verilog and analog blocks in
transistor level. I used AMS as the simulator, but I colud not find the
PSS and Pnoise options in AMS. How colud I plot the phase noise diagrams
of such kinds of mixed signal systems?
You can't do this currently. It would be theoretically possible if anything handled in the digital engine remained static during the PSS - so you could use the AMS simulation to configure the design, and then you run the PSS/Pnoise on the analog portions of the circuit. If however you wanted the digital portions of the design to be active, the problem is then that the digital portions would be a "hidden state" for PSS - the PSS algorithms would not have visibility of the state of the digital nodes.
Commonly complex PLLs use sigma-delta modulators (i.e. a Fractional-N PLL rather than Integer) and are consequently not periodic - so that would be a further reason why you couldn't do this (even if the hidden state issue had been solved).
However, even the first option is not possible currently.
There has been some thought about this - but we really need a customer partner who we can work with to identify the precise requirements and how this would work. So I would suggest that you contact customer support and then we can file an enhancement request with R&D capturing your needs.
Please do not double post (the forum guidelines tell you not to do this). I'll merge this post with your post in the mixed-signal forum.
Sorry @@" Thanks for your fruitful reply.
In reply to IEEE Chairman:
No problem - hopefully we can enhance the simulator to meet your needs in the future!