The SALT—Readout ASIC for Silicon Strip Sensors of Upstream Tracker in the Upgraded LHCb Experiment
Author:
Abellan Beteta Carlos, Andreou DimitraORCID, Artuso MarinaORCID, Beiter AndyORCID, Blusk StevenORCID, Bugiel RomaORCID, Bugiel SzymonORCID, Carbone AntonioORCID, Carli InaORCID, Chen BoORCID, Conti NadimORCID, De Benedetti FedericoORCID, Ding ShuchongORCID, Ely ScottORCID, Firlej MiroslawORCID, Fiutowski TomaszORCID, Gandini PaoloORCID, Germann DanielleORCID, Grieser Nathan, Idzik MarekORCID, Jiang XiaojieORCID, Krupa WojciechORCID, Li Yiming, Li ZhuomingORCID, Liang XixinORCID, Liu Shuaiyi, Lu YuORCID, Mackey LaurenORCID, Moron JakubORCID, Mountain RayORCID, Petruzzo MarcoORCID, Pham HangORCID, Schmidt BurkhardORCID, Sheng ShuqiORCID, Spadaro Norella ElisabettaORCID, Swientek KrzysztofORCID, Szumlak TomaszORCID, Tobin Mark, Wang Jianchun, Wilkinson MichaelORCID, Wu HangyiORCID, Zhang Feihao, Zou QuanORCID
Abstract
SALT, a new dedicated readout Application Specific Integrated Circuit (ASIC) for the Upstream Tracker, a new silicon detector in the Large Hadron Collider beauty (LHCb) experiment, has been designed and developed. It is a 128-channel chip using an innovative architecture comprising a low-power analogue front-end with fast pulse shaping and a 40 MSps 6-bit Analog-to-Digital Converter (ADC) in each channel, followed by a Digital Signal Processing (DSP) block performing pedestal and Mean Common Mode (MCM) subtraction and zero suppression. The prototypes of SALT were fabricated and tested, confirming the full chip functionality and fulfilling the specifications. A signal-to-noise ratio of about 20 is achieved for a silicon sensor with a 12 pF input capacitance. In this paper, the SALT architecture and measurements of the chip performance are presented.
Funder
Ministry of Science and Higher Education
Subject
Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry
Cited by
7 articles.
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1. Radiation study of the LHCb UT front-end readout ASIC;Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment;2024-07 2. Status of the LHCb Upstream Tracker;Proceedings of the 31st International Workshop on Vertex Detectors (VERTEX2022);2024-06-23 3. The LHCb Upgrade I;Journal of Instrumentation;2024-05-01 4. Ultra-low power 10-bit 50–90 MSps SAR ADCs in 65 nm CMOS for multi-channel ASICs;Journal of Instrumentation;2024-01-01 5. An ultra-low power 10-bit, 50 MSps SAR ADC for multi-channel readout ASICs;Journal of Instrumentation;2023-11-01
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