A High-Resolution Linear-Exponential Incremental Analog-to-Digital Converter With Digital Weight Compensation

  • Minkyu Yang Korea Advanced Institute of Science and Technology
  • Changjoo Park Korea Advanced Institute of Science and Technology
  • Jooeun Kim Korea Advanced Institute of Science and Technology
  • Jeongmyeong Kim Korea Advanced Institute of Science and Technology
  • Dalta Imam Maulana Korea Advanced Institute of Science and Technology
  • Wanyeong Jung Korea Advanced Institute of Science and Technology
DOI: https://doi.org/10.23075/jicas.2025.11.3.001
Keywords: Linear-exponential incremental ADC, digital filter, finite amplifier gain, weight optimization

Abstract

High-resolution analog-to-digital converters (ADCs) are essential for precise signal acquisition in applications such as medical imaging and high-quality audio systems. This paper presents a linear-exponential incremental ADC that addresses the key challenge of finite amplifier gain through a digital filter. Fabricated in a 65-nm CMOS process, the ADC achieves a peak signal-to-noise-and-distortion ratio (SNDR) of 87.3 dB and a total harmonic distortion (THD) of -101.8 dB for a 5.66 kHz input signal within an 18.75 kHz bandwidth. By compensating for analog imperfections in the digital domain, the proposed design achieves improved linearity and reliable high-resolution performance in demanding scenarios.

Author Biographies

Minkyu Yang, Korea Advanced Institute of Science and Technology

Minkyu Yang received the B.S. degree in electronic engineering from Hanyang University, Seoul, South Korea, in 2020, and the M.S. degree in electrical engineering from Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2022, where he is currently pursuing the Ph.D. degree in electrical engineering. His current research interests include the design of energy-efficient analog-front-end integrated circuits

Changjoo Park, Korea Advanced Institute of Science and Technology

Changjoo Park received the B.S. degree in electronic engineering from Inha University, Incheon, South Korea, in 2019 and received the M.S. degree in electrical engineering and computer science from the Gwangju Institute of Science and Technology, Gwangju, South Korea, in 2021. He is currently pursuing a Ph.D degree in electrical engineering at Korea Advanced Institute of Science and Technology, Daejeon, South Korea, since 2021. His current research interests include the design of energy-efficient analog-front-end integrated circuits.

Jooeun Kim, Korea Advanced Institute of Science and Technology

Jooeun Kim received the B.S. and M.S. degrees in electrical engineering from the Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2020 and 2022, respectively. He is currently pursuing a Ph.D degree in electrical engineering at the Korea Advanced Institute of Science and Technology, Daejeon, South Korea, since 2022. His current research interests include low-power circuits and sensor interfaces.

Jeongmyeong Kim, Korea Advanced Institute of Science and Technology

Jeongmyeong Kim received the B.S. degree in electrical and computer engineering from Ajou University, Suwon, South Korea, in 2020, and the M.S. degree in electrical engineering from the Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2022, where he is currently pursuing the Ph.D. degree in electrical engineering. His research interests include analog integrated circuit design, power management integrated circuits.

Dalta Imam Maulana, Korea Advanced Institute of Science and Technology

Dalta Imam Maulana received the B.S. degree in electrical engineering from Institut Teknologi Bandung, Indonesia, in 2019, and the M.S. degree in electrical engineering from Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2022, where he is currently pursuing the Ph.D. degree in electrical engineering. His research interests include asynchronous circuit design, 3D IC design, and energy-efficient accelerators for AI applications.

Wanyeong Jung, Korea Advanced Institute of Science and Technology

Wanyeong Jung received the B.S. degree from Seoul National University, Seoul, South Korea, in 2012, and the M.S. and Ph.D. degrees in electrical engineering from the University of Michigan, Ann Arbor, MI, USA, in 2014 and 2017, respectively. From 2017 to 2019, he was a post-doctoral Associate with Microsystems Technology Laboratories, Massachusetts Institute of Technology, Cambridge, MA, USA. Currently, he is an Associate Professor with the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. His research interests include low-power circuits and systems, energy-efficient edge computing, and the Internet of Things.

Homepage : https://seed.kaist.ac.kr/

Published
2025-07-01
How to Cite
Yang, M., Park, C., Kim, J., Kim, J., Maulana, D. I., & Jung, W. (2025). A High-Resolution Linear-Exponential Incremental Analog-to-Digital Converter With Digital Weight Compensation. Journal of Integrated Circuits and Systems, 11(3). https://doi.org/10.23075/jicas.2025.11.3.001
Issue
Vol 11 No 3 (2025)
Section
Articles