128-GS/s ADC Front-End with Over 60-GHz Input Bandwidth in 22-nm Si/SiGe FDSOI CMOS
Why this work is in the frame
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Bibliographic record
Abstract
The analog front-end of a 6-to-8 bit 128-GS/s SAR ADC architecture with record 60-GHz input bandwidth is presented. It includes the data path, 25% duty-cycle dc-32 GHz quadrature clock generator, 4 master, and 32 slave track-and-hold (T&H) circuits formed with CMOS series switches. Each of the 32 slave CMOS T&Hs drives either a 50-Ω output buffer (for testing) or a 30-fF hold capacitor, representative of the load provided by each of the 32 SAR sub-ADCs. To achieve record bandwidth and sampling rate, the data distribution network and the singleended-to-differential clock amplifier use novel 0.8-V n-MOS and 1.2-V p-MOS Cherry-Hooper buffers with good common-mode and supply rejection beyond 100 GHz, validated through smalland large-signal measurements. The 32-GHz quadrature clock generator is realized with a novel 80-GHz input bandwidth, 0.8-V quasi-CML static divider, followed by inductively-peaked CMOS logic circuits. The total power consumption of the analog frontend is 320 mW of which 120 mW are consumed by the data sampling interleaver and 200 mW by the clock generation unit. It occupies a total die area of 0.65 mm × 0.37 mm.
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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) | 0.003 | 0.001 |
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