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 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- μ m Silicon-on-Sapphire (SoS) CMOS technology. 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 their counterparts. We present the design of LOCx2-130 and LOCld-130. The test results of LOCx2-130 are also presented.