Non-Linear Modeling and Analysis of Amplifier-Less Potentiostat Architectures

Sannino, Andrea (Universidad de Zaragoza) ; Wiens, David-Peter ; Ortmanns, Maurits ; Artigas, José I. (Universidad de Zaragoza) ; Otín, Aránzazu (Universidad de Zaragoza)

Resumen: In this article, a previously published amplifier-less potentiostat architecture is further examined. Starting with a linearized model, the impact of the most important parameters is studied taking in account the electrodes-solution electrochemical interface. A detailed model is obtained and thoroughly verified, and recommended operating conditions are given for certain limit load conditions. Then, a more complete non-linear model is developed to take in account the measurement uncertainty introduced by the circuit non-linear components. This non-linear model is compared to a time domain description of the circuit and it is verified that it can predict the non-linear behavior with a precision better than 20%. This result enables the circuit designers to compensate for these effects and ultimately reduce the overall measurement uncertainty.

Idioma: Inglés

DOI: 10.1109/MWSCAS53549.2025.11244449

Año: 2025

Publicado en: Conference proceedings (Midwest Symposium on Circuits and Systems) 68 (2025), 618-622
ISSN: 1548-3746

Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2022-140556OB-I00
Financiación: info:eu-repo/grantAgreement/ES/UZ-IBERCAJA-CAI/IT14-24

Tipo y forma: Congress (Published version)

Área (Departamento): Área Tecnología Electrónica (Dpto. Ingeniería Electrón.Com.)