Behavioral modeling of continuous time ?? modulators
Bibliographic record
Abstract
A mixed-signal continuous time behavioral model of a continuous time delta-sigma modulator (CT /spl Delta//spl Sigma/) is presented. CT /spl Delta//spl Sigma/ modulators, by their nature, are mixed-signal systems. That fact creates a discontinuity in the traditional IC design flow which assumes that "discrete" and "continuous" time domain designs require separate design tools. We present a top level behavioral CT /spl Delta//spl Sigma/ model that can be used within the analog IC design environment. High speed CT /spl Delta//spl Sigma/ modulators are implemented using both "analog" and "digital" subblocks. We created mixed-signal models of the subblocks in order to efficiently perform simulations that accurately reflect circuit behavior in the continuous time domain. The models were built out of primitives available in SPICE and Verilog-A/sup /spl trade//. We present a first order CT low-pass /spl Delta//spl Sigma/ (CTLP /spl Delta//spl Sigma/) as well as a fourth order CT band-pass /spl Delta//spl Sigma/ (CTBP /spl Delta//spl Sigma/) to demonstrate the modeling technique and simulation methodology. We explored the influence of the loop delay and clock jitter on the CT /spl Delta//spl Sigma/ performance.
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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) | 0.000 | 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 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".