Wide Dynamic Range Front-End Programmable Isolation Amplifier using Integrated CMOS Hall Effect Sensor
Bibliographic record
Abstract
This paper presents a front-end amplifier with a novel isolation technique. The proposed isolation technique employs a single on chip stacked spiral coils to generate a signal dependent magnetic field. Also, an integrated Hall effect sensor implemented under the coil detects the generated magnetic field, while achieving a minimum isolation working voltage of 430 V. In this configuration, no signal modulation is required and frequencies from DC to 50 kHz are transmitted over the isolation barrier. On the high voltage side, a single bit programmable gain instrumentation amplifier increases the 3-dB frequency of the common mode rejection ratio and supports input differential voltage ranging from -2.5 to 2.5 V. Also, on the low voltage side, a dB-linear PGA with 6 bits of gain setting adapt the signal to the input dynamic range of an ADC. Finally, a programmable second order Butterworth Anti-Aliasing Filter conditioned the signal before conversion.
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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 | 0.000 | 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) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".