Design and Implementation of DAC and Comparator using MOSFET

This paper focuses on designing and implementing a Digital-to-Analog Converter (DAC) and a comparator using MOSFETs in CMOS technology, with validation through Cadence Virtuoso simulations. The DAC converts digital binary inputs to precise analog signals using a modular approach involving inverters, AND gates, and a binary decoder to control a resistive ladder, ensuring high resolution and linearity. The comparator, built with CMOS differential amplifiers and inverters, compares two analog signals and outputs a binary result, with emphasis on speed, accuracy, and noise tolerance. Key performance metrics such as resolution, settling time, linearity (INL/DNL), and power consumption are analyzed through testbench simulations. The two components are integrated into a unified system to showcase their combined functionality. This scalable and efficient design approach delivers high precision and low power consumption, making it suitable for applications in signal processing, embedded systems, and VLSI designs.