A 40-G samples/sec track & hold amplifier in 0.18/spl mu/m SiGe BiCMOS technology
Bibliographic record
Abstract
This paper presents a 40-G samples/sec track & hold amplifier (THA). The chip is manufactured in 0.18/spl mu/m SiGe BiCMOS and operates from a 3.6-V supply. The total power consumption is 540mW with a chip area of 1.1mm/sup 2/. Time domain measurements illustrate 40-GHz sampling with 5, 8 and 10 GHz sinusoidal input signals. S-parameter measurements show a 3-dB bandwidth of 43 GHz in track mode. The P1dB and IIP3 are -10.5 dB and 2.5 dB, respectively, at 12 GHz. The measured THD for a 19 GHz input signal is -27 dB at the input compression point and the SFDR is -30 dB for a 19 GHz input signal. When accounting for the 10 dB noise figure, the resolution of the THA is estimated to exceed 4 bits for signals with 40 Gb/s data rates.
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How this classification was reachedexpand
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 | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.003 |
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 itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".