Skip to main navigation Skip to search Skip to main content

A Low Power Cyclic ADC Architecture using Reference Scaling Technique

  • Indian Institute of Technology Kharagpur

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

This paper presents a prototype 9-bit 10MS/s cyclic Analog-to-Digital Converter (ADC) with reference scaling technique. The idea of reference scaling in cyclic ADC has yet to be explored, even though it has been used in pipelined ADC. The proposed ADC has two sub-ADC blocks along with two MDAC sampling networks and an OTA, which is shared between the two MDAC sampling networks in every alternative clock period. During the first bit-cycling phase, voltage swing is reduced, and reference voltages are scaled down by the same factor for the subsequent bit-cycling phases. A proof-of-concept ADC is designed and simulated in 65nm CMOS technology. This ADC achieves an SNDR of 52.5 dB and SFDR of 57.1 dB with a 1.2V peak-to-peak sinusoidal input signal of frequency 5MHz sampled at 10MHz while consuming 260μW power from 1.2V supply.

Original languageEnglish
Title of host publicationISCAS 2023 - 56th IEEE International Symposium on Circuits and Systems, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665451093
DOIs
StatePublished - 2023
Event56th IEEE International Symposium on Circuits and Systems, ISCAS 2023 - Monterey, United States
Duration: May 21 2023May 25 2023

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
Volume2023-May
ISSN (Print)0271-4310

Conference

Conference56th IEEE International Symposium on Circuits and Systems, ISCAS 2023
Country/TerritoryUnited States
CityMonterey
Period05/21/2305/25/23

Keywords

  • 1.5-bit architecture
  • Cyclic ADC
  • reference scaling
  • switched-capacitor

Fingerprint

Dive into the research topics of 'A Low Power Cyclic ADC Architecture using Reference Scaling Technique'. Together they form a unique fingerprint.

Cite this