CA DREAMS - Technical Seminar Series

Speaker: Mike Shuo-Wei Chen, Professor, USC

Talk Title: High-Speed DACs towards High Performance and Efficiency

Series: CA DREAMS - Technical Seminar Series

Abstract: There are increasing interests in wideband and flexible waveform synthesis in modern communication systems. The key enabler in such applications is a high performance digital-to-analog converter (DAC). This has motivated the design community to push the digital-to-analog converter (DAC) towards higher sampling rate (>GS/s) while achieving high dynamic range. Moreover, there is an emerging trend to design a DAC with high output power, i.e. a power DAC or digital power amplifier (PA). In this talk, I will overview various digital-to-analog architectures and filtering techniques that push the envelope of DAC bandwidth, linearity and/or noise floor. A dual-rate hybrid DAC architecture has been shown to enhance dynamic range while a time-approximation filter can be applied to suppress out-of-band emission. In addition, I will introduce an emerging digital PA architecture that aims for high power backoff efficiency, namely sub-harmonic switching (SHS) PA. Validated by a series of silicon prototypes, the proposed DAC architectures when used individually or jointly show a promising path towards high performance and efficiency.

Biography: Mike Shuo-Wei Chen is a Professor in Department of Electrical and Computer Engineering at University of Southern California. As a graduate student, he proposed and demonstrated the asynchronous SAR ADC architecture, which has been adopted in industry today for low-power high-speed analog-to-digital conversion products. After joining USC in 2011, he leads an analog mixed-signal circuit group, focusing on data converters, frequency synthesizers, RF/mm-wave transceiver designs, AI-assisted analog circuit design automation, bio-inspired computing, non-uniformly sampled circuits and systems. Dr. Chen was the recipient of Qualcomm Faculty Award in 2019, NSF Faculty Early Career Development (CAREER) Award, DARPA Young Faculty Award (YFA) both in 2014. His research team received ISSCC Jack Kilby Award and RFIC best student paper award in 2022. Dr. Chen has been serving as an associate or guest editor of the IEEE Journal of Solid-State Circuit (JSSC). IEEE Open Journal of the Solid-State Circuits Society (OJ-SSCS), IEEE Solid-State Circuits Letters (SSC-L), IEEE Transactions on Circuits and Systems II: Express Briefs (TCAS-II), as well as a TPC member in IEEE Solid-State Circuits Society conferences, including the IEEE International Solid-State Circuits Conference (ISSCC), IEEE Symposium on VLSI Circuits (VLSIC), and IEEE Custom Integrated Circuits Conference (CICC). He served as Distinguished Lecturer for IEEE Solid-State Circuits Society (SSCS). He is an IEEE Fellow.

Host: Dr. Steve Crago

More Info: https://www.isi.edu/events/5642/high-speed-dacs-towards-high-performance-and-efficiency/

Webcast: https://usc.zoom.us/j/97017422125?pwd=Dbrt8MNMrmBV3xalKQJcAiNsggFJjJ.1&from=addon

WebCast Link: https://usc.zoom.us/j/97017422125?pwd=Dbrt8MNMrmBV3xalKQJcAiNsggFJjJ.1&from=addon

Audiences: Everyone Is Invited

Contact: Amy Kasmir

Event Link: https://www.isi.edu/events/5642/high-speed-dacs-towards-high-performance-and-efficiency/

This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor.

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