High-performance CMOS clock distribution
Why this work is in the frame
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Bibliographic record
Abstract
In this chapter, we provided background on three major jitter sources in high performance CMOS clock distribution: power supply induced jitter (PSIJ), random jitter (RJ), and jitter amplification. We discussed how PSIJ is introduced in the CMOS inverter and its accumulation along a chain of buffers depending on the type of supply noise and its variation along the buffer chain. We also reviewed the analysis of RJ in the CMOS inverter. We described design tradeoffs to minimize both PSIJ and RJ in global clock distribution. We described linear models of jitter amplification, including the jitter impulse response (JIR) and jitter transfer function (JTF). Jitter amplification for buffers driving transmission -line interconnect was analyzed quantitatively, and simulations were used to develop insight. Design guidelines are also given for both cases. Finally, we discussed design considerations for jitter amplification in CMOS clock distribution. With the increasing use of CMOS circuits for high-performance clock distribution in advanced CMOS technologies, we believe the methods and guidelines in this chapter will prove ever more useful.
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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) | 0.001 | 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 | 0.001 | 0.001 |
| 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