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.
I'm simulating a VCO at the moment and I want to create a plot which shows
PhaseNoise@100kHz vs. tuning voltage of the VCO. However I'm having trouble
in getting the plot.The simulation is a PSS simulation with PNOISE that uses
a symbolic parameter that tracks with vdd to ensure that vtune does not exceed
the supply voltage. This range is then divided into 30 intervals to simulate PhaseNoise
at different VCO frequencies.
I get the various PhaseNoise plots but if I apply a value measurment @ 100kHz
to the waveforms I only get a single waveform measured.
The generated measurement within the calculator looks like this:
value(value(_drplPmNoise(?modifier "dBc") "vtune" 0.0) 100k)
which indicates that only the waveform with a tuning voltage of 0.0 is considered.
I have extended the list to include more voltages and it works but this approach
has some negative side effects if I change to supply voltage and therefore also the
voltage tuning range of the VCO. As the intervall is tracking with vdd I get different
voltages each time I change the settings for the supply :(
Is there an easy way to tell ADE that I just want a value measurement for all available
graphs without having to specify tons of voltage values ?
That's odd. I don't know how you did the sweep (or which version you were using), but normally the inner sweep should be the frequency sweep of the pnoise analysis, and the outer sweep would have been whatever you set up as the sweep on the PSS analysis form (assuming that's what you did - you really didn't describe the sweep setup) or using Tools->Parametric analysis in ADE.
So it ought to work using
value(_drplPmNoise(?modifier "dBc") 100k)
To remove any ambiguity about which variable you wish to slice though in the value function, you should be able to do:
value(_drplPmNoise(?modifier "dBc") 'freq 100k)
(From the expression I'm assuming you've set up to use "modulated" or "jitter" mode (in FM mode) on the pnoise form).