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Topical Workshop on Electronics for Particle Physics 2010 (TWEPP-10), Aachen : Allemagne (2010)
Wideband pulse amplifier with 8 GHz GBW product in a 0.35 μm CMOS technology for the integrated camera of the Cherenkov Telescope Array
D. Gascon1, A. Sanuy1, E. Delagnes2, X. Sieiro3, F. Feinstein4, J.-F. Glicenstein2, P. Nayman5, M. Ribo1, F. Toussenel5, J.-P. Tavernet5, P. Vincent5, S. Vorobiov4

A fully differential wideband amplifier for the camera of the Cherenkov Telescope Array (CTA) is presented. This amplifier would be part of a new ASIC, developed by the NECTAr collaboration, performing the digitization at 1 GS/s with a dynamic range of 16 bits. Input amplifiers must have a voltage gain up to 20 V/V and a bandwidth of 400 MHz. Being impossible to design a fully differential operational amplifier with an 8 GHz GBW product in a 0.35μm CMOS technology, an alternative implementation based on HF linearised transconductors is explored. Test results show that the required GBW product is achieved, with a linearity error smaller than 1% for a differential output voltage range up to 1 Vpp, and smaller than 3% for 2 Vpp.
1:  ICC-UB - Institut de Ciències del Cosmos
2:  IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)
3:  UB - Universitat de Barcelona
4:  LPTA - Laboratoire de Physique Théorique et Astroparticules
5:  LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
Physics/Astrophysics/High Energy Astrophysical Phenomena

Sciences of the Universe/Astrophysics/High Energy Astrophysical Phenomena

Physics/High Energy Physics - Experiment

Engineering Sciences/Electronics
VLSI circuits – Analogue electronic circuits – Front-end electronics for detector read-out – Gamma telescopes
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