SSCS UK and Ireland DL : Prof Seung Tak Ryu : CT DSM with SAR assisted Digital Noise Coupling
Title: Continuous-Time Delta-Sigma Modulator with SAR-Assisted Digital Noise Coupling
Abstract: Continuous-time (CT) delta-sigma modulators (DSMs) are highly favored for their inherent anti-aliasing properties and ease of signal driving. However, their overall power consumption is often dominated by the static power of the opamps required in their analog loop filter (LF). Digital noise coupling (DNC) presents a compelling solution, providing additional noise shaping without the need for more analog integrators. DNC can also play a different role in CT multi-stage noise shaping (MASH) DSMs, where it is applied as noise leakage shaping rather than offering extra noise shaping. In this talk, we discuss detailed design motivations, followed by comparisons of various DNC variants. It includes design examples, supporting equations, and architectural enhancements. Potential trends for hybridizing DNC with other existing techniques are also introduced, providing designers with alternative strategies in CT DSM implementations.
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- Tyndall National Institute
- Lee Maltings, Dyke Parade,
- Cork, Cork
- Ireland T12 R5CP
- Room Number: B.0.17
- Click here for Map
- Starts 10 June 2025 11:00 PM UTC
- Ends 18 June 2025 11:00 PM UTC
- No Admission Charge
Speakers
Seung-Tak Ryu
Biography:
Seung-Tak Ryu received his M.S. and Ph.D. degrees in Electrical Engineering from the Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 1999 and 2004, respectively. He began his professional career in 2004 at Samsung Electronics, Yongin, South Korea, where he worked on the development of mixed-signal IPs. From 2007 to 2009, he served as an Assistant Professor at the Information and Communications University (ICU), Daejeon. Since 2009, he has been a faculty member in the School of Electrical Engineering at KAIST, where he is currently a Professor. His research interests focus on analog and mixed-signal integrated circuit (IC) design, particularly in the areas of data converters and sensors.
Dr. Ryu is actively involved in the technical community. He is a member of the Technical Program Committees (TPC) for the IEEE International Solid-State Circuits Conference (ISSCC), the Asian Solid-State Circuits Conference (ASSCC), and the European Solid-State Circuits Conference (ESSCIRC). He previously served on the TPC of the IEEE Custom Integrated Circuits Conference (CICC) as Chair of the Data Converter Subcommittee. He has twice served as a Guest Editor for the IEEE Journal of Solid-State Circuits (JSSC) and was an Associate Editor for the IEEE Solid-State Circuits Letters (SSCL) from 2018 to 2023. From 2021 to 2022, he served as a Distinguished Lecturer for the IEEE Solid-State Circuits Society. He currently serves as an Associate Editor for both the IEEE Open Journal of Circuits and Systems (OJ-CAS) and the IEEE Open Journal of the Solid-State Circuits Society (OJ-SSCS).