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Wideband pulse amplifier with 8 GHz GBW product in a 0.35 μm CMOS technology for the integrated camera of the Cherenkov Telescope Array

Abstract : 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.
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Contributor : Serguei Vorobiov <>
Submitted on : Sunday, January 23, 2011 - 9:30:06 PM
Last modification on : Sunday, November 1, 2020 - 1:24:02 PM

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D. Gascon, A. Sanuy, E. Delagnes, X. Sieiro, F. Feinstein, et al.. Wideband pulse amplifier with 8 GHz GBW product in a 0.35 μm CMOS technology for the integrated camera of the Cherenkov Telescope Array. Topical Workshop on Electronics for Particle Physics 2010 (TWEPP-10), Sep 2010, Aachen, Germany. pp.C12034, ⟨10.1088/1748-0221/5/12/C12034⟩. ⟨in2p3-00548195⟩

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