Analogue digital converter for e-tongue application

Abstract

This work presents a report on designing analogue digital converter (ADC) for e-tongue application. In work for convert an analogue signal from the measurement subject to digital signal which is will be process by another device. In a standard 0.35um CMOS technology, 3-bits flash ADC is design in Mentor Graphic software. This device are consists of 8 comparator, 1 priority encoder and 3 flip-flop circuit. The proposed ADC is used 2.5V and -2.5V power supply to full operating speed. Minimum output of ADC is 0.0V, while the maximum output is 2.5V.