Design And Simulation Of High Linearity And Stability Operational Amplifier Circuitry For Amperometric Sensorud

摘要

Redox sensor is widely used to detect certain analytes of a chemical solutionudespecially concentration of a chemical solution. Redox sensor has advantages of detectionudof multiple ions inside a sensing areas by measurement and represent it in electricaludcurrent or voltage. However, sensitivity and output signal of sensor decreases due toudminiaturization of sensing area. This thesis presents a design of a potentiostat that is ableudto process the redox sensor small output signal in the range of 0 A to 10 μA and has audlinear and amplified voltage signal for integration with analogue digital conversionud(ADC) circuit. It provides a stable output when the voltage supply,