Construct Of A Low Voltage Schmitt Trigger

Noor Shazwani Najwa, Drahim (2014) Construct Of A Low Voltage Schmitt Trigger. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This project presents the effect of load capacitance and source voltage on the performance of Schmitt trigger designed circuit. A Schmitt Trigger circuit is a circuit with the combination of six transistors. It used in microchip processor to improve speed for data processing. It is a comparator circuit with hysteresis which is implemented by applying positive feedback to the non-inverting input of a comparator or differential amplifier. Schmitt Trigger is widely used in analogue and digital circuit to solve the noise problem and speed up the data processing. The project is to design a low voltage Schmitt trigger circuit using 0.18μm CMOS technology using Cadence simulation software. The circuit was designed to operate at low voltage to minimize energy consumption and to reduce the supply voltage of the circuit. The method of this design circuit is based on Conventional Schmitt Trigger by manipulating the arrangement of transistors and the width-length ratio. This method is applied to produce the best performance circuit by solving noise problems in microprocessor. The Cadence simulator software was successfully implemented in this project. The design is successfully constructed by Cadence simulation software. This CMOS Schmitt Trigger was able to operate at low voltage as low as 0.8 V to 1.5 V.

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