AI Accelerator Testing Depends On DFT Innovations


Key Takeaways: I/O and lane repair capabilities are becoming critical to improving yield. System-level testing catches marginal defects and rare defects such as silent data corruption errors. Synopsys and TSMC developed a multi-die demo vehicle capable of full test, monitor, debug, and repair capability across the system’s lifecycle. The proliferation of accelerators in AI... » read more

Enhancing Silicon Reliability With In-System Test And SLM Data


Innovation in semiconductor development and manufacturing shows no signs of slowing down. Ever-larger chips at ever-smaller geometries create new challenges all the time. At the same time, competitive pressures are shrinking time to market (TTM) and putting enormous pressure on project teams. Furthermore, the wide use of electronics in safety-critical applications demands better reliability, av... » read more

AI Accelerators Usher In New Era For IC Test


Key Takeaways The parallelism in AI accelerators enables low latency but complicates failure isolation. HBM can account for 50% of package cost, so known-good stack assurance is critical. DFT and test cooperate to solve final test, singulated die test, SLT, and in-system test for data centers. AI accelerators are used for everything from training large language models to mak... » read more

Analog Scan: Unlocking A New Era In Mixed-Signal Test


Anyone involved in IC product sign-off that includes a mixed signal design portion knows that developing robust tests for these intricate designs has historically been a significant bottleneck, no matter the application. It's a hurdle many of us have faced, leading to extended development times, high costs, and sometimes an unsettling uncertainty about the true quality of our tests. Traditio... » read more

Are You Using Structural Patterns In An SLT Environment?


Extending the in‑field life of your silicon is essential for long‑term success and for staying ahead of your competitors in today’s rapidly evolving digital world of data centers, automotive and cellular chipsets, and AI applications. For those reasons, it’s increasingly important to test your silicon in a System Level Test (SLT) environment. Testing in an SLT environment offers many be... » read more

Multi-Die Assemblies Require More Detailed Test Plan Earlier


Key Takeaways Design for test takes on new urgency in complex multi-die assemblies, where it can be used to minimize downstream errors and the cost of fixing them. DFT needs to be increasingly detailed due to more connections and the inability to access some components. DFT strategies need to be developed earlier and may require multiple testing approaches. Multi-die assembl... » read more

Wafer Probe Struggles To Adapt To Multi-Die Assemblies


Wafer probe, one of the key processes for ensuring reliability in semiconductor manufacturing, is becoming increasingly unreliable in multi-die assemblies and at leading-edge nodes. For much of the semiconductor industry’s history, wafer probe occupied a stable, largely uncontested role in manufacturing. It was understood as a screening step, an electrical checkpoint to identify failing de... » read more

Tackling Chip Complexity With Integrated System-Level Test Solutions


As the sophistication of semiconductors continues to grow, so does the need for system-level test (SLT) in production to ensure that high-performance processors, chiplets, and other advanced devices function as expected in real-world environments. Once seen primarily as a fallback to catch what traditional automated test equipment (ATE) missed, SLT has now become a mission-critical step for val... » read more

Integrating Design Verification To Approach Zero Defects


As semiconductor applications in automotive, data center, and high-performance computing grow increasingly mission-critical, the industry faces mounting pressure to achieve near-perfect manufacturing test coverage—often exceeding 99%. Yet, meeting stringent zero-defect defective parts per million (DPPM) targets remains a formidable challenge. Traditional structural testing methods frequently ... » read more

Using AI/ML To Find And Correlate IC Test Data


What causes low yield in wafers? Usually it's due to design or process changes, but sometimes yield issues occur even if there haven't been any changes from one manufacturing lot to the next. Finding the cause requires some sleuthing, and the best approach for pinpointing problems is to mine design, process, and manufacturing data, and to correlate that data by date and time, by which equipment... » read more

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