We present a novel design and the test results of a 4-channel driver for an array of Vertical-Cavity Surface-Emitting Lasers (VCSELs). This ASIC, named cpVLAD and fabricated in a 65 nm CMOS technology, has on-chip charge pumps and is for data rates up to 10 Gbps per channel. The charge pumps are implemented to address the issue of voltage margin of the VCSEL driving stage in the applications under low temperature and harsh radiation environment. Test results indicate that cpVLAD is capable of driving VCSELs with forward voltages of up to 2.8 V using 1.2 V and 2.5 V power supplies with a power consumption of 94 mW/channel.
@article{arxiv.2011.00298,
title = {A novel quad-channel 10 Gbps CMOS VCSEL array driver with integrated charge pumps},
author = {X. Huang and D. Gong and D. Guo and S. Hou and G. Huang and S. Kulis and C. Liu and T. Liu and P. Moreira and A. Sánchez Rodríguez and H. Sun and Q. Sun and J. Troska and L. Xiao and L. Zhang and W. Zhang and J. Ye},
journal= {arXiv preprint arXiv:2011.00298},
year = {2021}
}