A 28-mW 32-Gb/s/pin 16-QAM Single-Ended Transceiver for High-Speed Memory Interface

Jieqiong Du, Jia Zhou, Chia Jen Liang, Boyu Hu, Yuan Du, Mau Chung Frank Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A 32-Gb/s low-power single-ended 16-QAM transceiver using four signal levels is presented for high-speed memory interface. With four-bit per symbol, the transceiver increases the symbol period by 4× to enhance energy-efficiency by reducing the bandwidth requirement for most circuit blocks and mitigating equalization requirements. The transmitter achieves 16-QAM modulation by combining two QPSK modulators for linearity relaxation. Taking advantage of the DC-balanced 16-QAM signal, the receiver adopts a low-noise single-to-differential amplifier with a low-power DC feedback to recover the signal without requiring an external reference. The proposed transceiver achieves 0.875 pJ/bit at full rate while occupying 0.018 mm2 in 28-nm CMOS technology.

Original languageEnglish
Title of host publication2020 IEEE Symposium on VLSI Circuits, VLSI Circuits 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728199429
DOIs
StatePublished - Jun 2020
Event2020 IEEE Symposium on VLSI Circuits, VLSI Circuits 2020 - Honolulu, United States
Duration: 16 Jun 202019 Jun 2020

Publication series

NameIEEE Symposium on VLSI Circuits, Digest of Technical Papers
Volume2020-June

Conference

Conference2020 IEEE Symposium on VLSI Circuits, VLSI Circuits 2020
CountryUnited States
CityHonolulu
Period16/06/2019/06/20

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    Du, J., Zhou, J., Liang, C. J., Hu, B., Du, Y., & Chang, M. C. F. (2020). A 28-mW 32-Gb/s/pin 16-QAM Single-Ended Transceiver for High-Speed Memory Interface. In 2020 IEEE Symposium on VLSI Circuits, VLSI Circuits 2020 - Proceedings [9162874] (IEEE Symposium on VLSI Circuits, Digest of Technical Papers; Vol. 2020-June). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VLSICircuits18222.2020.9162874