7. Fault Modeling and Simulation
Fault modeling and simulation are critical in predicting and analyzing potential faults in electronic systems, especially as designs grow in complexity. These processes enable engineers to optimize test coverage and enhance system reliability by identifying weak points prior to manufacturing. Various fault models and simulation tools are employed to ensure that electronic circuits function correctly under possible fault conditions, aiding in early fault detection and cost reduction.
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What we have learnt
- Fault modeling defines potential failure scenarios for electronic circuits, guiding testing and verification.
- Simulation tools allow for analyzing circuit behavior under fault conditions, enabling efficient cost-effective design validation.
- There are various types of fault models, including stuck-at, transition, delay, bridging, and open circuit models, each addressing different error types.
Key Concepts
- -- Fault Modeling
- The process of defining potential faults that may occur in electronic circuits to guide testing and verification.
- -- Fault Simulation
- The analysis of circuit behavior under specific fault models to evaluate the system's performance and reliability.
- -- StuckAt Fault Model
- A fault model where a signal is fixed at either a logic high or low, regardless of the input.
- -- Delay Fault Model
- A model where the propagation delay in a signal exceeds expected timing, potentially causing logic operation failures.
- -- SPICE Simulation
- A tool used for circuit-level simulation, particularly in analog and mixed-signal circuits, modeling component interactions.
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