Two low-power optical data transmission ASICs for the ATLAS Liquid Argon Calorimeter readout upgrade

Abstract

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-μm 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.

12 pages, 12 figures

References in corpus (4)

• Mid-board miniature dual channel optical transmitter MTx and transceiver MTRx
• LOCx2, a Low-latency, Low-overhead, 2 x 5.12-Gbps Transmitter ASIC for the ATLAS Liquid Argon Calorimeter Trigger Upgrade
• Optical Data Transmission ASICs for the High-Luminosity LHC (HL-LHC) Experiments
• The Clock and Control System for the ATLAS Liquid Argon Calorimeter Phase-I Upgrade