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.
What is your desired result?
In reply to VKhlyupin:
The desired result should be that of an ideal comparator.
In reply to ksnf3000:
Not sure your last response is terribly helpful (nor was the question from VKhlyupin to be honest).
Anyway, you can only use ac analysis on a Linear Time Invariant system - but what you have here is a Linear Time Variant (or Linear Time Varying) system. Put another way, the ac analysis does a small signal analysis around a single dc point - but in this case your operating point is actually a period of the clock. So similarly dc doesn't make a whole lot of sense either.
What you need to do is to use pss and pac to analysis your system. This allows you to look at the time-averaged AC response of the circuit over a period of operation. Whilst these analyses are commonly used in RF design, they are also suitable for other kinds of switching circuits such as switched capacitor filters, chopper-stabilized amplifiers, and switched comparators. See this paper for details on using it with switched capacitor design, for example.
In reply to Andrew Beckett:
Thanks for your prompt response. The pdf is really helpful as I am working on switched capacitors which uses a clocked comparator.