Accelerate Chip Verification, Strengthen Design Confidence, & Get to Market Faster with Questa One
Overcome IC Verification Bottlenecks Before They Impact Development
As integrated circuits become increasingly complex, engineering teams face growing demands to verify more functionality, improve coverage, and meet tighter development schedules. Lengthy simulation cycles, coverage gaps, and time-consuming debug processes can create verification bottlenecks that delay design completion and increase development costs.
Siemens Questa One addresses these challenges with an AI-powered smart verification environment that combines advanced simulation engines, static and formal analysis, verification IP, analytics, and intelligent automation. From functional simulation and debug to regression optimization and coverage closure, Questa One helps engineering teams identify design issues earlier, streamline verification workflows, and make better use of engineering resources.
The result: faster verification cycles, reduced manual effort, improved coverage, and greater confidence in IC design quality before silicon production.
Why Organizations Choose Questa One
Accelerate Verification With AI-Powered Automation
Apply generative, predictive, and analytical AI to improve verification productivity. Automate repetitive engineering tasks, generate verification artifacts, and use intelligent analysis to streamline workflows. Questa One helps engineers focus on complex design challenges while reducing time spent on manual verification activities.
Improve Verification Coverage & Design Confidence
Combine simulation, static analysis, and formal verification to evaluate design behavior and identify potential issues. Questa One provides technologies for simulation-based and stimulus-free verification, helping engineering teams improve coverage and identify design problems that may be difficult to uncover through traditional methods alone.
Reduce Debug Time & Verification Workloads
Use advanced debugging, analytics, and intelligent automation to investigate failures, identify potential root causes, and streamline issue resolution. Reduce manual effort and help verification teams focus on the most critical design challenges.
Accelerate Coverage Closure & Time-to-Market
Connect verification data, analysis, and workflows to identify coverage gaps and prioritize closure activities. Questa One helps teams improve regression efficiency, reduce verification bottlenecks, and move toward design sign-off faster.
Scale Verification for Increasing Design Complexity
Support verification demands across IP, SoC, and system-level designs, including advanced 3D IC and chiplet-based architectures. Questa One combines scalable engines and connected technologies to help engineering teams address increasingly complex semiconductor designs.
Strengthen DFT, Power, Safety & Hardware Assurance
Apply specialized verification technologies to address design-for-test (DFT), low-power design, functional safety, and hardware security requirements. Identify potential design issues, evaluate fault behavior, and improve confidence in critical hardware before production.
Questa One Key Capabilities
AI-Powered Smart Verification
Apply generative, predictive, and analytical AI to improve verification productivity. Questa One supports smart creation, smart analysis, smart debug, smart regression, and smart engines to automate tasks, streamline workflows, and help engineers make better use of verification data.
Functional Simulation & Debug
Verify complex digital designs using advanced simulation engines and integrated debugging capabilities. Questa One Sim combines functional simulation technologies with debugging to help engineers investigate design behavior, identify failures, and improve verification productivity across ASIC, SoC, and FPGA development.
Static & Formal Verification
Apply static and formal analysis to identify design issues and evaluate functional behavior without relying exclusively on simulation test stimulus. Questa One SFV (Stimulus Free Verification) provides more than 20 stimulus-free analyses to address tasks such as RTL issue hunting, connectivity analysis, property verification, register analysis, and security analysis.
Verification Planning & Management
Connect verification plans, requirements, and results to improve traceability, collaboration, and project visibility. Questa One Verification IQ provides a data-driven verification management environment with applications for test planning, coverage analysis, regression management, and verification insights.
Regression Management & Optimization
Use analytics and machine learning to improve regression efficiency, prioritize simulation tests, and identify patterns within verification results. Questa One Verification IQ Regression Navigator helps teams focus on tests that are more likely to uncover failures or improve coverage.
Coverage Analysis & Acceleration
Identify coverage gaps and prioritize activities needed to achieve verification goals. Questa One Verification IQ Coverage Analyzer provides insight into coverage results, while Questa One Sim CX uses advanced constraint-solving technology to accelerate coverage closure and help reduce simulation time and compute resources.
Design-for-Test (DFT) Verification
Apply DFT-aware simulation, static and formal analysis, fault grading, and in-system test verification to improve DFT sign-off workflows. Questa One Sim DX provides DFT simulation acceleration technologies in partnership with Siemens Tessent, helping reduce verification bottlenecks before tape-out.
Power-Aware Verification
Verify active power management behavior early in the design process. Questa One Sim PA supports static and dynamic checks during simulation to identify behavioral issues and help engineers validate low-power design strategies.
Functional Safety & Fault Simulation
Evaluate safety mechanisms and analyze fault behavior in safety-critical hardware designs. Questa One Sim FX provides scalable fault simulation technologies to help assess design resilience to random faults and support functional safety verification.
Hardware Security & Trust Analysis
Analyze hardware designs for potential security vulnerabilities and verify critical design paths. Questa One SFV includes security analysis capabilities to help identify unauthorized access paths to security-critical or safety-critical storage elements and assess hardware trust.
Verification IP & Protocol Compliance
Use reusable verification IP (VIP) and compliance test suites to validate industry-standard interfaces and protocols. Questa One Avery Verification IP provides protocol-aware debug and coverage analytics to help improve verification quality and reuse verification environments across simulation, emulation, and prototyping workflows.
Agentic AI for IC Design & Verification
Extend verification automation with the Questa One Agentic Toolkit. Domain-specific AI agents support RTL code generation, lint configuration and analysis, clock-domain crossing (CDC) verification, verification planning, and debug. These workflows help automate complex engineering tasks while retaining engineer review and oversight at critical decision points.
Accelerate IC Development With Engineering Services, Software & Expert Support From Saratech
Get more from Siemens Questa One with Saratech, a Siemens Digital Industries Software Platinum level partner with expertise across electronic design automation (EDA), engineering, and product development. Beyond software licensing, Saratech helps your team evaluate, implement, integrate, and optimize Siemens solutions to improve design processes, reduce costly iterations, and accelerate time to market. Saratech empowers your team with expert-led software training, mentoring, engineering services, process improvement services, and ongoing support from skilled engineers. Whether you are adopting new verification technologies, improving existing EDA workflows, or looking to increase productivity across your engineering organization, Saratech provides the expertise and support to help your team achieve better results.
Download the eBook to learn how to streamline PCB design verification, improve design quality, and reduce engineering effort.
One Trusted Partner for Your Entire Product Development Journey
When you partner with Saratech, you get more than software. You get an experienced engineering partner with the expertise, technology, and services to support your product development journey from design and engineering through manufacturing and beyond. Our team of engineering experts help you solve complex challenges, improve processes, maximize your technology investments, and achieve better business outcomes. Saratech provides the right solutions to help you achieve your goals, reduce waste, boost efficiency, and accelerate product development.
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Questa One Frequently Asked Questions FAQs
What is Siemens Questa One?
Siemens Questa One is an AI-powered smart verification solution within the Siemens Electronic Design Automation (EDA) portfolio. It combines connected verification technologies, advanced simulation engines, static and formal analysis, verification IP, data analytics, and AI-powered automation to help engineering teams improve verification productivity, accelerate coverage closure, and increase design confidence.
What is Questa One used for?
Questa One is used to verify integrated circuit (IC) designs and identify potential functional and design issues throughout development. Engineering teams use its simulation, formal verification, static analysis, debug, and analytics technologies to evaluate design behavior, improve coverage, and streamline verification workflows before manufacturing.
How does Questa One use AI?
Questa One applies generative, predictive, and analytical AI to improve verification workflows. Its smart verification capabilities support automated creation, intelligent analysis, debug assistance, and regression optimization. The Questa One Agentic Toolkit extends these capabilities with AI-driven workflows for RTL creation, lint, CDC verification, verification planning, and debug.
What is the Questa One Agentic Toolkit?
The Questa One Agentic Toolkit brings domain-specific agentic AI workflows to the Questa One smart verification portfolio. It includes specialized agents for RTL code generation, lint analysis, clock-domain crossing verification, verification planning, and debug. These agents help automate engineering tasks while allowing engineers to review results and retain oversight of critical decisions.
What is the difference between simulation and formal verification?
Simulation evaluates design behavior using specific test scenarios and input stimulus. Formal verification uses mathematical methods to analyze design behavior and determine whether specified properties hold across possible input conditions. Both approaches provide complementary methods for identifying design issues and improving verification confidence.
What is Questa One Verification IQ?
Questa One Verification IQ is a collaborative, data-driven verification management solution that uses AI, machine learning, and analytics to improve verification productivity. Its applications include Coverage Analyzer, Regression Navigator, Testplan Author, and Verification Insight, supporting coverage analysis, regression optimization, test planning, and verification management.
How does Questa One help improve verification coverage?
Questa One provides simulation, formal verification, coverage analysis, and data-driven technologies to help engineering teams identify coverage gaps and prioritize closure activities. Questa One Verification IQ supports coverage analysis, while Questa One Sim CX provides constraint-solving technology to accelerate coverage closure.
Does Questa One support DFT verification?
Yes. Questa One includes DFT-aware verification technologies for gate-level simulation, static and formal analysis, fault grading, and in-system test verification. Questa One Sim DX provides DFT simulation acceleration and integrates with Siemens Tessent technologies to help improve DFT verification efficiency and sign-off.
Can Questa One support low-power and functional safety verification?
Yes. Siemens provides specialized power-aware and safety-aware verification technologies within the Questa One portfolio. Questa One Sim PA supports verification of active power management behavior, while Questa One Sim FX provides fault simulation capabilities to evaluate the resilience of safety-critical designs.
What types of designs can Questa One verify?
Questa One supports verification technologies for a range of semiconductor designs, including IP, ASIC, SoC, and FPGA development. Siemens also positions the portfolio to address increasingly complex 3D IC and chiplet-based architectures and system-level designs.
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