New Frontiers in Communication and Intelligent Systems
Stability Analysis of Transimpedance Amplifier for Capacitive Sensor Applications
Authors: B. P. Joshi, T. P. Mahajan and D. C. Gharpure
Publishing Date: 12-11-2021
ISBN: 978-81-95502-00-4
Abstract
The aim of this study is to analyze transimpedance amplifier with a feedback network (TIA-Fn) for measuring unknown capacitance value. Mathematical analysis along with electronic circuit simulation results are presented. The selection criterion of feedback components (Cf and Rf) is discussed. The circuit is capable of measuring unknown capacitance in the range of 1pF to 10pF which is useful in many applications such as thickness measurement, Electrical Capacitance Tomography, Moisture measurement to name a few. Frequency domain analysis has been carried out forgain and stability parameters of the proposed circuit with AD LT spice simulation software. While simulating, non-ideal components are taken in to consideration. Mathematical and simulation results are mutually related. The designed amplifieris suitable for connecting the unknown capacitance terminal with AC excitation.
Keywords
Capacitance Measurement, Transimpedance Amplifier, StabilityAnalysis.
Cite as
B. P. Joshi, T. P. Mahajan and D. C. Gharpure, "Stability Analysis of Transimpedance Amplifier for Capacitive Sensor Applications", In: Rahul Srivastava and Aditya Kr. Singh Pundir (eds), New Frontiers in Communication and Intelligent Systems, SCRS, India, 2021, pp. 77-83. https://doi.org/10.52458/978-81-95502-00-4-10