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.
Get the most out of your investment in Cadence technologies through a wide range of training offerings.
This course combines our Allegro PCB Editor Basic Techniques, followed by Allegro PCB Editor Intermediate Techniques.
Virtuoso Analog Design Environment Verifier 16.7
Learn learn to perform requirements-driven analog verification using the Virtuoso ADE Verifier tool.
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 using Virtuoso Analog Design Enviroment in order to perform some simulations in Spectre with an nmos cell from the AnalogLib.
The issue is that I would like to add some model parameters of the nfet.scs file (e.g. tox, vth0_n, u0 etc.) in the CDF parameters of the nmos cell. Thus I can set those model parameters as variables, in order to perform a sweep simulation.
I have tried to define those model parameters in Edit CDF Window in CIW, however I have had no success. Anyone could help me to do this task properly? I hope it has become clear. Thanks a lot.
The CDF parameters will end up as instance parameters, so you'd have to arrange that you have some kind of subckt model for your transistor where you can pass in the model parameters. In other words, your nfet.scs would look something like:
inline subckt nfet (d g s b)parameters w=1u l=1u tox=1e-7 vto=0.6model nfet mos3 type=n tox=tox vto=vto // and any other parameters you want to be fixednfet (d g s b) nfet w=w l=lends nfet
In the above, I've used a mos3 model, but of course you'd define whatever model you want (bsim4, bsim3v3, etc, with the appropriate parameters). Because the model is parameterized, and defined within the subckt, it can use any parameters passed to an instrance of nfet.
Then you'd define these additional parameters as CDF parameters in the CDF for the device, and list them in the instParameters in the spectre simInfo so that they get netlisted.
Does that help? Sorry it's a bit brief...