The Distinguished Lecture on “Comparators tell more than “1” or “0”: An Example of an 8b 1GS/s SAR ADC Fully Utilizing the Comparator” will take place as follows:
Date: 07 November 2024 (Thursday)
Time: 10:30 a.m. – 12:00 p.m.
Venue: Research Building N21, G013
The speaker is:
Prof. SHEN Linxiao, Assistant Professor, the School of Integrated Circuits, Peking University, Beijing, China
The Lecture is:
Comparators tell more than “1” or “0”: An Example of an 8b 1GS/s SAR ADC Fully Utilizing the Comparator
Abstract:
The SAR ADC is vital for ADC-based serial links due to its energy efficiency, but speed is a challenge. Metastability is a limiting factor to its speed. Traditional solutions increase time or speed up the comparator for metastability tolerance, causing a speed-power trade-off. A potentially more efficient solution is to monitor the comparator’s comparison time and correct codes. By utilizing the extra free information, this work acquires two extra bits and accelerates conversion. It uses an on-chip self-tuning delay for accuracy and a bi-directional switching logic for speed. It also minimizes the impact of changes in the input common-mode voltage. This results in a 47.2dB SNDR at 1GS/s with a Nyquist input. The 8b SAR ADC consumes 4.15mW and 0.0032mm2, leading to a Walden FoM of 22.23fJ/conv.-step.
Biography:
Prof. SHEN received the B.S. degree from Fudan University in 2014, and the Ph.D. Degree from UT Austin in 2019.
Prof. SHEN is currently an Assistant Professor with the School of Integrated Circuits, Peking University, Beijing, China. From 2019 to 2020, he was a Analog Design Engineer with Silicon Laboratories, Austin. His current research interests include high-performance ADCs, intelligent sensor interfaces, imaging systems.
Prof. SHEN has received several awards for his research contributions, including 2024 IEEE CICC Outstanding Student Paper Award, 2023 IEEE ISSCC the Anathan P. Chandraksan Distinguished-Technical-Paper Award, 2018-2019 IEEE SSCS Predoctoral Achievement Award. He serves on the TPC of the IEEE Custom Integrated Circuits Conference (CICC). He was on the TPC of DAC. He was an Associate Editor of the TCAS-I.
For more details, kindly find the event poster, abstract and bio.
