Design Considerations For Ultra-High Current Power Delivery Networks


This article is adapted from a presentation at TestConX, March 5-8, 2023, Mesa, AZ. A power-delivery network (PDN), also called a power-distribution network, is a localized network that delivers power from voltage-regulator modules (VRMs) throughout a load board to the package’s chip pads or wafer’s die pads. The PDN includes the VRM itself, all bulk and localized capacitance, board vi... » read more

Device Validation: The Ultimate Test Frontier


This article is a condensed version of an article that appeared in the November/December 2022 issue of Chip Scale Review. Adapted with permission. Read the original article at https://chipscalereview.com/wp-content/uploads/flipbook/30/book.html, p. 26. In the early days of space exploration, spacecraft were manned by small teams of astronauts, most of whom were experienced test pilots who ... » read more

Emerging Technologies Are Driving System Level Test Adoption


With the size of semiconductor transistors decreasing and chip complexity increasing exponentially, semiconductor test has become essential to ensuring that only high-quality products go to market. With the introduction of more rigorous acceptable quality level (AQL) certifications, test methods must constantly evolve to meet these standards, and system level test (SLT) and traditional test... » read more

A Customized Low-Cost Approach For S-Parameter Validation Of ATE Test Fixtures


This article summarizes the content of a paper jointly developed and presented by Advantest and Infineon at TestConX 2022. Device under test (DUT) fixtures for ATE systems pose several verification challenges. Users need to measure the DUT test fixture quickly and easily, while making sure the measurements mimic the ATE-to-test-fixture interface performance and determining how to handle DUT ... » read more

Site-To-Site Variation In Parallel Test


From wafer to system level test, parallel test execution delivers significant benefits, including reduced costs, yet it’s never as simple as that PowerPoint slide you present to management. An engineering effort is required to balance the thermo-electrical challenges that occur as you increase the number of sites to be tested, or the number of slots in a burn-in oven or system level te... » read more

Testing AiP Modules In High-Volume Production


Far-field and radiating near-field are two options for high-volume over-the-air (OTA) testing of antenna-in-package (AiP) modules with automated test equipment (ATE) [1]. In this article, we define an AiP device under test (DUT) and examine the measurement results from both methods. Creating an AiP evaluation vehicle Proper evaluation of an ATE OTA measurement setup requires an AiP module. Us... » read more

ATE In The Age Of Convergence And Exascale Computing


We are currently in the midst of the age of convergence – that is, the convergence of data from a range of applications and data sources. These sources constitute anything that creates data – ranging from human-created data, such as voice and video, through automotive, mobile, and wireless/IoT devices. This also includes edge computing and servers storing the massive amounts of data needed ... » read more

Digital IC Bring-Up With A Bench-Top Environment


One of the hottest markets for IC today is artificial intelligence (AI). The designs for AI chips are also among the largest and most complex, with billions of transistors, thousands of memory instances, and complex design-for-test (DFT) implementations with unique bring up and debug requirements. At this point, the volume of new AI chips is relatively low, but time-to-market is of paramount im... » read more

What’s in a Name?


Test Vision 2020 is a specialty workshop held each year during Semicon West. Formerly known as ATE Vision 2020, the program focuses on automatic test equipment and related topics. This year’s edition heard a lot about artificial intelligence, automotive electronics, and machine learning, which have been the leading topics at every tech conference I’ve attended in 2018. The workshop’s t... » read more

Accelerating Test Pattern Bring-Up For Rapid First Silicon Debug


Reducing the time spent on silicon bring-up is critical in getting ICs into the hands of customers and staying competitive. Typically, the silicon bring-up process involves converting the test patterns to a tester-specific format and generating a test program that is executed by Automatic Test Equipment (ATE). This standard silicon bring-up flow is becoming too slow and expensive, especially fo... » read more

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