University of Oulu

M. Safarpour, R. Inanlou, O. Silvén, T. Rahkonen and O. Shoaei, "A Reconfigurable Dual-Mode Tracking SAR ADC without Analog Subtraction," 2019 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA), Poznan, Poland, 2019, pp. 28-32. doi: 10.23919/SPA.2019.8936832

A reconfigurable dual-mode tracking SAR ADC without analog subtraction

Saved in:
Author: Safarpour, Mehdi1; Inanlou, Reza2; Silvén, Olli1;
Organizations: 1Faculty of Electrical Engineering and Computer Science, University of Oulu, Oulu, Finland
2School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.7 MB)
Persistent link:
Language: English
Published: Institute of Electrical and Electronics Engineers, 2019
Publish Date: 2020-01-16


In this contribution, it is proposes to limit the quantization search space of a successive approximation analog-to-digital converter through an analytic derivation of maximum possible sample-to-sample variation. The presented example design of the proposed ADC is an 8-bit 1MS/s ADC with SAR logic customized to incorporate this priori information while no modification has been required to the analog circuitry. In comparison to conventional SAR conversion, the proposed tracking approach yields significant reduction in total power consumption in oversampling mode. The power savings are due to the reduced number of SAR cycles, and voltage variation minimization across DAC capacitors. The design is reconfigurable both to conventional SAR sampling and the proposed tracking scheme. The approach is attractive for SAR ADCs embedded in very low power micro-controllers.

see all

Series: Signal Processing Algorithms, Architectures, Arrangements, and Applications Conference proceedings
ISSN: 2326-0262
ISSN-E: 2326-0319
ISSN-L: 2326-0262
ISBN: 978-83-62065-36-3
ISBN Print: 978-1-7281-3990-6
Pages: 1 - 5
DOI: 10.23919/SPA.2019.8936832
Host publication: 2019 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) 18-20th September 2019, Poznań, Poland
Conference: Signal Processing Algorithms, Architectures, Arrangements and Applications
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: The support of Academy of Finland for project ICONICAL (grant 313467) and 6Genesis Flagship (grant 318927) is gratefully acknowledged.
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
313467 (Academy of Finland Funding decision)
Copyright information: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.