1. Home
  2. Siemens EDA Software
  3. IC Tool Portfolio
  4. Questa One
  5. Simulation
  6. Questa One Sim FX - DFT
Digital screen displaying blue binary computer code.

Functional Fault Grading for DFT

Questa One Sim FX

Questa One Sim FX is a high-performance simulator used in Design-For-Test (DFT) for functional fault grading to enhance defect coverage for complex ICs. Integration with market-leading Tessent TestKompress offers a powerful solution for approaching zero defects parts per million (DPPM).

Why Questa One Sim FX for functional fault grading?

The automated flow and support of Tessent's format for advanced fault models provides a unique solution for improving the reliability of high-performance and complex ICs.

Address fault coverage gaps

Address faults that can only be activated by functional patterns to improve overall defect coverage.

Increase the fault coverage

Increase the fault coverage beyond the scope of structural fault models.

Coverage for mixed-signal circuits

Functional fault grading helps in verifying the correct operation and robustness of mixed-signal circuits such as security circuitry and analog blocks.

Questa One Sim FX

Enhance defect coverage with functional fault grading

While ATPG scan-based testing is critical for detecting low-level, structural faults, functional fault grading helps ensure that the overall functional integrity of the device is maintained and that test patterns reflect the conditions that the chip will experience in real-world usage. This combination of structural and functional fault analysis helps provide a more comprehensive and robust testing strategy.

Close-up view of an electronic chip on a blue printed circuit board.

Related products

Electric car using autonomous driving with a navigation system visible while traveling on an open road.
FMEDA
all

Questa One Verification IQ Compliance Advisor

Compliance Advisor optimizes safety compliance traceability between goals and fault campaigns with team-based FMEDA creation. Provides certification documentation, expert estimates, early metrics, and safety result visualization.

A Siemens Digital Twin rendering showing a red physical car on the left and a transparent digital model of the same car on the right, set against a dark blue background.
Safety Analysis
all

Questa One Safety Analyzer

Questa One Safety Analyzer identifies potential failures at pre-RTL and RTL, preventing costly redesigns and delays. Exploration and what-if analysis help engineers increase the safety level of their design.

An engineer thinking in front of two monitors showing Questa Analyze Fault data.
Exhaustive Fault Analysis
all

Questa Analyze Fault

The Questa Analyze Fault application is a solution based on Questa formal technology, which analyzes faults by injecting them and formally check their outcome for hardware security and safety.

Deepen your knowledge of Questa One Sim FX

Support Center

Siemens EDA offers world-class customer support for Questa One Sim FX and all of our products.

Visit Support Center

Verification Academy

The Verification Academy provides the skills necessary to mature an organization's functional verification process capabilities, providing a methodological bridge between high-level value propositions and the low-level details.

Learn more

Verification Horizons blog

To assist with the understanding of advanced functional verification technologies and how to apply them most effectively, visit our blog for insight and updates on concepts, values, standards, methodologies and examples.

Read blog