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SAMPA chip: a new ASIC for the ALICE TPC and MCH upgrades

Abstract : This paper presents the SAMPA, an ASIC designed for the upgrade of read-out front end electronics of the ALICE Time Projection Chamber (TPC) and Muon Chambers (MCH). SAMPA is made in a 130 nm CMOS technology with 1.25 V nominal voltage supply and includes 32 channels, with selectable input polarity, and five possible combinations of shaping time and sensitivity. Each channel comprises a Charge Sensitive Amplifier, a semi-Gaussian shaper and a 10-bit ADC, followed by a Digital Signal Processor. A prototype in a multi project run was submitted to evaluate the performance of each of these blocks. The experimental results of the tests on these building blocks are presented, showing a substantial agreement with requirements.
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Submitted on : Thursday, March 31, 2016 - 3:36:56 PM
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S.H.I. Barboza, M. Bregant, V. Chambert, B. Espagnon, H.D. Hernandez Herrera, et al.. SAMPA chip: a new ASIC for the ALICE TPC and MCH upgrades. Topical Workshop on Electronics for Particle Physics 2015, Sep 2015, Lisbonne, Portugal. ⟨10.1088/1748-0221/11/02/C02088⟩. ⟨in2p3-01295767⟩



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