A serializer ASIC and a VCSEL driver ASIC are needed for the front-end optical data transmission in the ATLAS liquid argon calorimeter readout phase-I upgrade. The baseline ASICs are the serializer LOCx2 and the VCSEL driver LOCld, designed in a 0.25-{\mu}m Silicon-on-Sapphire (SoS) CMOS technology and consumed 843 mW and 320 mW, respectively. Based on a 130-nm CMOS technology, we design two pin-to-pin-compatible backup ASICs, LOCx2-130 and LOCld-130. Their power consumptions are much lower then of their counterparts, whereas other performance, such as the latency, data rate, and radiation tolerance, meet the phase-I upgrade requirements. We present the design of LOCx2-130 and LOCld-130. The test results of LOCx2-130 are also presented.
@article{arxiv.2009.06148,
title = {Two low-power optical data transmission ASICs for the ATLAS Liquid Argon Calorimeter readout upgrade},
author = {Le Xiao and Wei Zhou and Quan Sun and Binwei Deng and Datao Gong and Di Guo and Huiqin He and Suen Hou and Chonghan Liu and Tiankuan Liu and James Thomas and Jian Wang and Annie C. Xiang and Dongxu Yang and Jingbo Ye and Xiandong Zhao},
journal= {arXiv preprint arXiv:2009.06148},
year = {2020}
}