International Journal of Power Electronics and Drive Systems (IJPEDS)
Vol 14, No 4: December 2023

A low power and high speed 45 nm CMOS dynamic comparator with low offset

Brindha, Kulothungan (Unknown)
Manjula, Jothilingam (Unknown)



Article Info

Publish Date
01 Dec 2023

Abstract

The development of efficient data converters necessitates the design of low-power and high-speed comparators with low offset. Data converters, such as analog to digital converters (ADCs) and digital to analog converters (DACs), are critical components in applications like wireless communication, multimedia, and sensor interfaces. To enhance the performance of these data converters, improving the speed and power efficiency of comparators becomes crucial. Designing dynamic comparators with low power consumption and high-speed capabilities greatly enhances the sampling rate and accuracy of data converters. Moreover, addressing the offset voltage of comparators becomes crucial for achieving accurate signal conversion. To fulfill this need, a novel dynamic comparator has been designed, featuring high-speed operation, low-power consumption, and minimal offset. The circuit comprises a pre-amplifier with a charge pump, followed by a decision circuit and an output stage. Through simulations, the comparator has demonstrated low power consumption of 15.04 µW, a delay of 80.51 ps, and an extremely low offset voltage of 8 µV. These characteristics make it highly suitable for data converters. The comparator operates at a clock frequency of 1 GHz and a supply voltage of 1 V, and the simulation was conducted using the Cadence Virtuoso tool in a 45 nm CMOS technology.

Copyrights © 2023






Journal Info

Abbrev

IJPEDS

Publisher

Subject

Control & Systems Engineering Electrical & Electronics Engineering

Description

International Journal of Power Electronics and Drive Systems (IJPEDS, ISSN: 2088-8694, a SCOPUS indexed Journal) is the official publication of the Institute of Advanced Engineering and Science (IAES). The scope of the journal includes all issues in the field of Power Electronics and drive systems. ...