Design Methodologies for Low-Jitter CMOS Clock Distribution
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Bibliographic record
Abstract
Clock jitter negatively affects the performance of sampling circuits such as high-speed wireline transceivers and data converters. With CMOS buffers being increasingly used for the distribution of precise clocks in advanced technologies, it is important to understand their limitations and explore design tradeoffs. This tutorial provides quantitative analyses of the main sources of jitter in CMOS clock distribution: power supply induced jitter, jitter generation, and jitter amplification. Minimizing the number of buffers along the clock distribution network while still maintaining fast rise-fall times and ensuring proper settling of all clock waveforms will minimize the impact of all jitter sources. Following these guidelines can simultaneously reduce power supply noise sensitivity and power consumption of the clock distribution circuits. These conclusions are backed up by simulation and measurement results of two 16-nm FinFET clock distribution networks.
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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 | 0.001 | 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 | 0.001 | 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