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Dynamic Damping in Transimpedance Amplifiers

2020· article· en· W3091247772 on OpenAlexaff
Pouria Aminfar, Glenn Cowan

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldEngineering
TopicAnalog and Mixed-Signal Circuit Design
Canadian institutionsConcordia University
Fundersnot available
KeywordsTransimpedance amplifierIntersymbol interferenceTransconductanceBandwidth (computing)AmplifierControl theory (sociology)PhysicsComputer scienceElectronic engineeringVoltageTransistorDifferential amplifierElectrical engineeringEngineeringTelecommunicationsChannel (broadcasting)

Abstract

fetched live from OpenAlex

This paper presents a design technique for optical receivers that adjusts the damping factor of a 2 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">nd</sup> -order transimpedance amplifier (TIA) synchronously with the incoming data. This approach allows the fast response of low-damping factor while mitigating the intersymbol interference (ISI) associated with underdamped systems. A differential shunt-feedback TIA (SF-TIA) is optimized to reach its minimum input-referred noise, with and without cross-coupled inverters at its output. The negative transconductance introduced at the TIA's output improves bandwidth, noise performance and vertical eye opening (VEO). Dynamic damping is introduced by adding a triode-region transistor with a time-varying bias voltage across the outputs which modulates the damping factor of the system from -0.42 to 3.5 each unit interval. With dynamic damping, the TIA achieves more than twice the VEO compared to the optimized reference TIA.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.969
Threshold uncertainty score0.343

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.014
GPT teacher head0.197
Teacher spread0.183 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreEmpirical

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".

Quick stats

Citations2
Published2020
Admission routes1
Has abstractyes

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