CMOS integrated readout circuit technique for EGFET based on biosensor application

摘要

This paper presents the CMOS readout technique for extended gate field effect transistor (EGFET) based on the voltage divider circuit technique and indirect feedback readout interfacing circuit(ROIC). These circuits have designs using mentor graphic tools with 0.13μm silterra technology file. The investigation of this project focuses on the size ratio of EFGET, temperature compensation, and sweeping power supply. The simulation results show the indirect feedback ROIC was better performances compare to voltage divider circuit technique in terms of temperature compensation and controlling the power supply.