A 2-40 Gb/s PAM4/NRZ dual-mode wireline transmitter with 4:1 MUX in 65-nm CMOS

Lv, F, Zheng, X, Zhao, F, Wang, J, Wang, Z, Yuan, S, He, Y, Zhang, C and Wang, Z (2018) A 2-40 Gb/s PAM4/NRZ dual-mode wireline transmitter with 4:1 MUX in 65-nm CMOS. Journal of Semiconductor Technology and Science, 18 (2). pp. 270-280. ISSN 1598-1657

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Abstract

This paper presents a 2-40 Gb/s dual-mode wireline transmitter supporting the four-level pulse amplitude modulation (PAM4) and non-return-to-zero (NRZ) modulation with a multiplexer (MUX)-based two-tap feed-forward equalizer (FFE). An edge-acceleration technique is proposed for the 4:1 MUX to increase the bandwidth. By utilizing a dedicated cascode current source, the output swing can achieve 900 mV with a level deviation of only 0.12% for PAM4. Fabricated in a 65-nm CMOS process, the transmitter consumes 117 mW and 89 mW at 40 Gb/s in PAM4 and NRZ at 1.2 V supply. © 2018, Institute of Electronics Engineers of Korea. All rights reserved.

Item Type:	Article
Subjects:	Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions:	Computer Science and Mathematics
Publisher:	Nurimedia
Date of acceptance:	26 October 2017
Date of first compliant Open Access:	22 May 2018
Date Deposited:	22 May 2018 11:09
Last Modified:	04 Sep 2021 02:41
DOI or ID number:	10.5573/JSTS.2018.18.2.270
URI:	https://researchonline.ljmu.ac.uk/id/eprint/8698

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