ICCCAS 2024 Invited Speaker

Hao San

Tokyo City University, Japan

Biography: Hao San received M.S. and Dr. Eng. degrees in electronic engineering from Gunma University, Japan, in 2000 and 2004, respectively. From 2000 to 2001, he worked with Kawasaki Microelectronics, Inc. He joined Gunma University as an assistant professor in the Department of Electronic Engineering in 2004. In 2009, he joined Tokyo City University, and is presently a professor in Department of Electrical, Electronics and Communication Engineering there. His research interests include analog and mixed-signal integrated circuits. Dr. San has been an Associate Editor of IEICE Transactions on Electronics from 2010 to 2016. He was the treasurer of the IEEE Circuits and Systems Society Japan Chapter from 2011 to 2012. He is a member of the IEEE, IEICE and IEEJ.
Speech Title: Continuous Time Delta-sigma AD Modulator using FIR DAC
Abstract: This paper presents a multi-bit, 4th-order continuous-time ΔΣAD modulator to achieve high SNDR at a low OSR. A 1.5-bit 4th-order continuous-time DSM with a 4-tap FIR DAC is proposed to relax the requirements for the analog componets of DSM. SPICE simulations results of the proposed CT DSM in 0.6um CMOS confirmed that SNDR=94.39dB is achieved while a sinusoid -8.79dBFS input is sampled at 3.2MS/s and the bandwidth is 25kHz(OSR = 64), under the power supply voltage of 3.3V. Simulation results also verify the feasibility and effectiveness of the proposed DSM circuit configuration.