A Comparative Analysis of Different Comparators for Analog-to-Digital Convertor Applications: A Review

In this study, we look at two technologies Carbon Nano Tube Field Effect Transistors (CNTFETs) and CMOS-based dynamic comparators. Six CNTFET-based comparator architectures two-stage, push-pull, and double dynamic comparators are implemented by using hspice tool in 32nm technology, and using the cadence vistuso tool in 180nm technology, a CMOS-based dynamic comparator is created and simulated 500 MHz. Important performance matrix is evaluated, including area, average power and latency. The result reveals the CNTFET-based comparators achieve up to three times reduced power consumption, higher speed, and increased robustness under temperature and supply variations. In comparison, the CMOS two-stage device uses 32% less power and work 20% faster than typical CMOS designs make considerable advances, CNTFET-based circuits are more efficient and scalable, making them viable options for next-generation low-power, high-speed ADCs.