Ultra low-power low-noise transimpedance amplifier for MEMS-based reference oscillators
Bibliographic record
Abstract
A transimpedance amplifier (TIA) has been designed in a 130 nm CMOS technology node to serve as a sustaining amplifier for a MEMS-based oscillator. A regulated cascode (RGC) configuration is used at the input stage to reduce the impact of the input parasitic capacitance on the TIA bandwidth as well as to minimize loading effects on the Q-factor of the resonator. In typical conditions, the TIA achieves a mid-band gain of 112.5 dBΩ and a 3 dB bandwidth of 239 MHz, while dissipating only 360 μW from a 1.2V supply. A linear RLC model of a MEMS wine-glass disk resonator resonating at 20 MHz with a Q-factor of 104is used to validate the TIA. The post layout simulations show a phase noise below -125 dBc/Hz at a 1 kHz offset and a noise floor of -131.9 dBc/Hz.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| 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 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
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".