Contactless Test Access Mechanism for TSV-Based 3-D ICs Utilizing Capacitive Coupling
Why this work is in the frame
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Bibliographic record
Abstract
Through silicon via (TSV) is considered an enabling technology for 3-D integrated circuit (IC) integration. Testing 3-D ICs with multiple stacked dies is a challenging task. Probing a TSV for the purpose of testing with conventional wafer probes can undermine its physical integrity. In this paper, a contactless TSV probing method using capacitive coupling is presented. The proposed solution eliminates the risks of direct TSV probing and supports the high-density and fine-pitch requirements for TSV probing. 3-D full-wave simulations indicate that a strong electric field is formed between the probe and the TSV when the distance between them falls below 5 μm. The measurement results on a prototype fabricated with CMOS 65-nm technology show that the proposed TSV probing scheme presents a -55-dB insertion loss at 1-GHz frequency. The probe can be used up to a data rate of 5 Gbits/s while maintaining higher than 35-dB signal-to-noise ratio.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it