SAMPA chip: a new ASIC for the ALICE TPC and MCH upgrades
- Barboza, S.H.I.
- Bregant, M.
- Chambert, V.
- Espagnon, B.
- Herrera, H.D. Hernandez
- Mahmood, S.M.
- Moraes, D.
- Munhoz, M.G.
- Noël, G.
- Pilyar, A.
- Russo, P.
- Sanches, B.C.S
- Tambave, G.J.
- Tun-Lanoë, K.M.M.
- Noije, W. van
- Velure, A.
- Vereschagin, S.
- Weber, T.O.
- Zaporozhets, S.
DOIAbstract
International audienceThis 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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