Optimization of Comparator Selection Algorithm for TIQ Flash ADC Using Dynamic Programming Approach

Ali Ozdemir, Mshabab Alrizah, Kyusun Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A Threshold Inverter Quantization (TIQ) architecture for Flash Analog to Digital Converters (ADCs) uses inverters as a voltage comparator. TIQ approach has many advantages over a differential voltage comparator, but it is hard to create and select comparators for it. Precise selection of gate switching voltage is crucial for Flash Analog to Digital Converters (ADCs). Therefore, Differential Non-Linearity (DNL) and Integral Non-Linearity (INL) error measurements are used to understand how precisely voltage comparators are selected. Different selection algorithms are used to make selection as precise as possible. In this work, we present two new algorithms based on a dynamic programming approach along with DNL and INL simulation results. Comparison with state-of-the-art methods, 4 times, and 5 times DNL improvements are achieved through the new approach for 6-bit and 8-bit respectively.

Original languageEnglish (US)
Title of host publicationProceedings - 2019 IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2019
PublisherIEEE Computer Society
Pages495-500
Number of pages6
ISBN (Electronic)9781538670996
DOIs
Publication statusPublished - Jul 2019
Event18th IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2019 - Miami, United States
Duration: Jul 15 2019Jul 17 2019

Publication series

NameProceedings of IEEE Computer Society Annual Symposium on VLSI, ISVLSI
Volume2019-July
ISSN (Print)2159-3469
ISSN (Electronic)2159-3477

Conference

Conference18th IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2019
CountryUnited States
CityMiami
Period7/15/197/17/19

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All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

Ozdemir, A., Alrizah, M., & Choi, K. (2019). Optimization of Comparator Selection Algorithm for TIQ Flash ADC Using Dynamic Programming Approach. In Proceedings - 2019 IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2019 (pp. 495-500). [8839388] (Proceedings of IEEE Computer Society Annual Symposium on VLSI, ISVLSI; Vol. 2019-July). IEEE Computer Society. https://doi.org/10.1109/ISVLSI.2019.00095