Non-Linear Modeling and Analysis of Amplifier-Less Potentiostat Architectures
Abstract
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.
Keywords
Cite
@article{arxiv.2504.20836,
title = {Non-Linear Modeling and Analysis of Amplifier-Less Potentiostat Architectures},
author = {Andrea Sannino and David-Peter Wiens and Maurits Ortmanns and José I. Artigas and Aránzazu Otín},
journal= {arXiv preprint arXiv:2504.20836},
year = {2025}
}
Comments
Article submitted to an IEEE conference. This work has been submitted to the IEEE for possible publication