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Design of the analog front-end for the Timepix3 and Smallpix hybrid pixel detectors in 130 nm CMOS technology
CERN, Geneva, Switzerland. (Medipix)
CERN, Geneva, Switzerland. (Medipix)
CERN, Geneva, Switzerland. (Medipix)
CERN, Geneva, Switzerland. (Medipix)
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2014 (English)In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 9, p. Art. no. C01037-Article in journal (Refereed) Published
Abstract [en]

This paper describes a front-end for hybrid pixel readout chips, which was developed for the Timepix3 and Smallpix ASICs. The front-end contains a single-ended preamplifier with a structure for leakage current compensation which can handle both signal polarities, and a single-threshold discriminator with compensation for pixel-to-pixel mismatch. Preamplifier and discriminator are required to be fast, to allow a Time-Of-Arrival (TOA) measurement with a resolution of 1.56 ns. Time-Over-Threshold (TOT) is also measured; the monotonicity of TOT with respect to the input charge is greatly improved as compared to the previous Timepix chip. The analog area is only 55 μm × 13.5 μm. Timepix3 has already been fabricated and the first test results are also presented in this paper.

Place, publisher, year, edition, pages
2014. Vol. 9, p. Art. no. C01037-
Keywords [en]
Front-end electronics for detector readout Electronic detector readout concepts (solid-state) Analogue electronic circuits Pixilated detectors and associated VLSI electronics
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:miun:diva-21131DOI: 10.1088/1748-0221/9/01/C01037ISI: 000332307000037Scopus ID: 2-s2.0-84893070480Local ID: STCOAI: oai:DiVA.org:miun-21131DiVA, id: diva2:690490
Available from: 2014-01-23 Created: 2014-01-23 Last updated: 2017-08-15Bibliographically approved

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Fröjdh, ErikWong, Winnie

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