A Low-Power 40-Gb/s Pre-Emphasis PAM-4 Transmitter with Toggling Serializers

Dae Hyun Kwon; Minkyu Kim; Sung Geun Kim; Woo Young Choi

doi:10.1109/TCSII.2019.2922040

A Low-Power 40-Gb/s Pre-Emphasis PAM-4 Transmitter with Toggling Serializers

Dae Hyun Kwon, Minkyu Kim, Sung Geun Kim, Woo Young Choi

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article

Abstract

We demonstrate a 40-Gb/s PAM-4 transmitter having 2-tap pre-emphasis, whose power consumption is significantly reduced by the use of toggling serializers. In addition, a new type of PAM-4 source-series terminated driver is proposed, which enables an easy control of pre-emphasis gain while maintaining impedance matching. A prototype 40-Gb/s PAM-4 transmitter containing these circuit ideas are successfully realized in 28-nm CMOS technology. It occupies 0.006 mm² and achieves energy efficiencies of 1.2 pJ/bit for 40-Gb/s operation without any pre-emphasis, and 1.68 pJ/bit with 9.54 dB pre-emphasis gain.

Original language	English
Article number	8734109
Pages (from-to)	400-434
Number of pages	35
Journal	IEEE Transactions on Circuits and Systems II: Express Briefs
Volume	67
Issue number	3
DOIs	https://doi.org/10.1109/TCSII.2019.2922040
Publication status	Published - 2020 Mar

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

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Kwon, D. H., Kim, M., Kim, S. G., & Choi, W. Y. (2020). A Low-Power 40-Gb/s Pre-Emphasis PAM-4 Transmitter with Toggling Serializers. IEEE Transactions on Circuits and Systems II: Express Briefs, 67(3), 400-434. [8734109]. https://doi.org/10.1109/TCSII.2019.2922040

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