Cadence Allegro Sigrity X
Sign off with confidence
Fast and accurate signal/power integrity
& design-stage EMI analysis
Sigrity: Signoff-Grade SI/PI for PCB Design
Sigrity brings signoff-grade signal integrity and power integrity analysis into the OrCAD and Allegro PCB design environment, helping engineers identify and resolve electrical issues earlier in the workflow. Originally brought into Cadence to strengthen the PCB tool suites, Sigrity enables designers to move from layout to analysis without breaking flow, with results that can be viewed directly on the canvas inside the PCB tools.
For teams that prefer not to run analysis in-house, Sigrity also supports a collaborative workflow where an SI/PI specialist or bureau can perform the simulations and share results back into the design environment for direct review. This makes advanced analysis more accessible across the design team while keeping the process tightly connected to the PCB layout.
Cadence also includes selected Sigrity capabilities within the PCB suites at no extra cost, giving users access to useful analysis functions such as decoupling-related checks and other entry-level integrity features. This helps teams start improving design robustness earlier, even before adopting the full Sigrity workflow.
What are Sigrity Tokens?
For organisations that want to run SI/PI analysis themselves, Cadence now offers a flexible licensing model through Sigrity tokens. Each product is opened using a defined number of tokens, depending on the tool, with some requiring 2 tokens, others 4 or 6. Once a user launches a Sigrity tool, the tokens remain in use for as long as that tool is open, and are then returned to the floating license pool when it is closed, making the system efficient and easy to share across a team.
- Key Sigrity SI Capabilities
- Serial Link Analysis (PCIe, USB, etc.)
- Power-Aware Parallel Bus Analysis (DDR)
- Interface Sign Off with Pass/Fail Compliance Analysis
- Pre-Layout and Post-Layout Analysis
- Automated Reporting
- Wizard-based Workflows
- Key Sigrity PI Capabilities
- Power Delivery Network (PDN) Analysis and Optimization
- Decoupling Capacitor Optimization
- Pre-Layout and Post-Layout Analysis
- Automated Reporting
- Wizard-based Workflows
- Key Sigrity EM Capabilities
- Multi-solver (2D, 2.5D, 3D, MoM, Q3D, FDTD)
- S-parameter Characterization & Analysis
- Adaptive mesh refinement for IC package and PCB designs
- Accurate EM solutions for ECAD/MCAD 3D structures
- Low Memory Footprint, Near Linear Scalability
- Parallelization & Cloud-scaling ready
- Key Sigrity EMI/EMC Capabilities
- Evaluate near-field E/H densities and radiation effects
- Identify problematic EMI radiating devices
- Determine necessary shielding and faraday cage placement
- Determine the impact of external radiation and system susceptibility
- Key Sigrity Thermal Capabilities
- Full System Electrothermal Co-Simulation
- DC Static and Transient Analysis
- Incorporation of External Heat Sources and Thermal Transfer Coefficients
- FEM Solver for Accurate Conductive Joule Heating Analysis
- Powerful Computational Engine and Meshing Technology
- Key Sigrity ESD Capabilities
- Realistic Representation of IEC-61000-4-2 Testbench Environment
- Emulate ESD Pulse Injections
- Analyze the Effects of a Physical ESD Gun on Your Design
Here we explore how many Sigrity tokens each tool requires
Add a 2 Token Pack to a 6 Token pack and run all these in parallel
Sigrity X Aurora PCB Analysis
Sigrity X Aurora PCB Analysis delivers powerful in-design and post-layout signal and power integrity insight for printed circuit board development. It enables engineers to identify and resolve issues such as crosstalk, reflections, impedance discontinuities, and return-path problems early in the design cycle, helping improve performance and reduce costly late-stage redesigns.
Sigrity X Aurora IC Package Analysis
Sigrity X Aurora IC Package Analysis extends advanced signal and power integrity verification to integrated circuit package designs. It gives design teams the ability to evaluate package interconnects, power delivery, and high-speed signal behavior before fabrication, supporting a more robust transition from chip to board.
Sigrity X Starter Kit
Sigrity X Starter Kit provides a streamlined entry point into signal and power integrity analysis. Designed for rapid adoption, it helps engineers perform essential checks and identify common design risks early, making it an effective foundation for teams beginning to incorporate analysis into their workflow.
Sigrity Broadband SPICE
Sigrity Broadband SPICE enables accurate broadband interconnect modeling for use within SPICE-based circuit simulation. By translating electromagnetic behavior into compact, simulation-ready models, it allows engineers to assess interconnect performance with greater confidence in system-level verification.
Sigrity Transistor to Behavioral Modeling (T2B)
Sigrity Transistor to Behavioral Modeling (T2B) converts detailed transistor-level designs into efficient behavioral representations. This allows high-fidelity device behavior to be retained in system simulations while significantly improving simulation speed and supporting faster design exploration.
Sigrity X OptimizePI
Sigrity X OptimizePI is focused on optimizing power delivery networks for improved stability and reduced noise. It helps engineers evaluate decoupling strategies and power distribution performance, enabling more efficient PDN design and stronger confidence in voltage integrity.
Sigrity X PowerDC
Sigrity X PowerDC provides direct-current analysis for power distribution networks, with a focus on voltage drop, current density, and IR drop assessment. It is a valuable tool for ensuring that the power infrastructure can reliably support design requirements under operating load conditions.
Sigrity X PowerSI
Sigrity X PowerSI delivers comprehensive signal integrity analysis for PCB and package structures. It helps design teams characterize reflections, coupling, impedance variation, and other high-speed effects, supporting better performance and fewer electrical surprises during validation.
Sigrity X SPEEDEM
Sigrity X SPEEDEM provides fast electromagnetic extraction for interconnect structures, enabling accurate model generation for traces, vias, and packages. Its speed and fidelity make it especially useful for accelerating early-stage analysis and improving the efficiency of the broader verification flow.
Sigrity X ERC
Sigrity X ERC performs electrical rule checking to identify connectivity and topology issues before detailed analysis begins. By highlighting design-rule and netlist-related problems early, it helps streamline signoff, reduce rework, and improve overall design quality.
Unified Design Environment
The unique, workflow-driven design environment and comprehensive simulation engines allow you to quickly access and perform the analysis needed to meet your design goals. As your analysis requirements increase, easily add additional workflows all within the same common UI. Never miss a step or feel unsure of your simulation setup with Sigrity workflow driven analysis.
Workflows
Step-by-step analysis processes
The unique, workflow-driven design environment and comprehensive simulation engines allow you to quickly access and perform the analysis needed to meet your design goals. As your analysis requirements increase, easily add additional workflows all within the same common UI. Never miss a step or feel unsure of your simulation setup with Sigrity workflow driven analysis
Multi-CAD
CAD neutral by design
Perform comprehensive analysis of your PCBs regardless of the file format or CAD tool used for the design. Sigrity X accepts neutral file formats, such as IPC-2581 and ODB++, as well as CAD-specific files such as Altium, Cadence, Mentor, and Zuken.
PCB & IC PKG Aware
Automate simulation prep and setup
Drastically reduce simulation setup time and errors with PCB & IC PKG aware setup with Sigrity X. Sigrity X understands PCB & Package structures and natively integrates with the Cadence PCB file formats to automate port configurations and make flex and rigid-flex simulation setup easy and straightforward.
Automated Reporting
Easily capture and share simulation results
Automatically generate reports containing tabular data, plots, pass/fail results, and more to efficiently communicate the analysis and required changes for your PCB designs.
Shift Left With Sigrity X
Simulation shouldn’t be a singular event for the end of the design. To maximize the benefit and effectiveness of simulation in your design flow it is important to be able to simulate effectively at any stage. Sigrity X provides access to the most comprehensive range of simulation engines simulation engines and tools to allow for full multi-physics analysis to occur at all phases enabling a true simulation driven digital twin-based design flow.
Sigrity Tokens
Flexible and cost effective access
Gain access to the full Sigrity X platform on-demand with Sigrity tokens. Sigrity tokens solves one of the most prevalent problems for teams looking to adopt a simulation-driven workflow, usage and solver access. Traditional models require purchase of each solver and analysis tool separately with many of the tools sitting idle while those particular simulation engines are not needed. This makes justifying the cost of simulation tools a big challenge and leaves you susceptible to other SI/PI issues that cannot be analyzed. Sigrity tokens allows teams to leverage the full Sigrity X portfolio on-demand saving significant costs and enabling simulation to be broadly used throughout the design process, ensuring high utilization and efficiency.
In-Design Analysis
Simulate and fix direclty inside your PCB design environment
Analyze common SI and PI problems without leaving your PCB design environment. Graphical overlays as well as tabular results help you easily identify and correct issues directly in the PCB canvas as you design.
Topology Workbench
Powerful pre and post layout analysis & optimization
TopXP provides a ready-made interface for pre and post layout exploration and analysis. From single board to multi-board system level simulation, TopXP provides the flexible easy-to-use environment needed to perform your SI/PI analysis.
Interact with the physical design and run full board simulation and extraction to build models and test your design effectiveness. Perform multi-corner optimization, such as decap placement, with ease.
3D Workbench
Full Wave 3D electrical and mechanical simulation
Easily and model your complex 3D structures from via, to connectors, and full flex PCBs. With automated setup and unmatched performance, you can ensure hardware correlated accuracy for your critical 3D structures.
Build True Virtual Prototypes
Often the size and granularity of simulations required to obtain a real-world analysis results in lengthy run times that are not feasible in today’s fast-paced markets. Sigrity X allows you to build true virtual prototypes and perform analysis quickly with the industry leading performance, capacity, and accuracy
Parallelized Architecture
10x your simulation performance
Full multi-threading support allows you to accelerate analysis speed even farther by leveraging your multi-core compute resources to go from run to results in no-time.
Cloud Accelerated
Scale seamlessly and linearly
Easily leverage the cloud to scale your compute resources with near linear improvement in performance. With the lowest memory footprint on the market, you can scale cost effectively levering less expensive compute resources while producing faster results.
Full 3D Signoff
High capacity high accuracy 3D EM
Clarity 3D EM was architected from the ground up and provides the fastest, highest capacity, lowest memory footprint solution for EM extraction. Simulate with confidence knowing that you can handle the most complex solution spaces without approximation or cut and stitch, ensuring what you analyze represents what you will build.
Hardware Correlated
Simulate what you build
Analyze and verify with confidence knowing your results will have tight correlation to real-world hardware. Cadence rigorously tests Sigrity X against their own hardware ensuring the correlation you need to sign-off with confidence.
Optimize with AI
AI-Assisted design exploration
AI-powered optimization architecture enables efficient evaluation of design corners and design alternatives to perform hardware-accurate system-level optimization in a fraction of the time based on defined design goals.
Contact us today for your free 15 day Sigrity X evaluation license













