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Medipix2, a 64k pix...
Medipix2, a 64k pixel readout chip with 55 μm square elements working in single photon counting mode
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- Llopart Cudié, Xavier (author)
- Mittuniversitetet,Institutionen för informationsteknologi och medier (-2013),Electronics Design Division
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Campbell, M (author)
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Dinapoli, R (author)
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San Segundo, D (author)
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Pernigotti, E (author)
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(creator_code:org_t)
- 2002
- 2002
- English.
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In: IEEE Transactions on Nuclear Science. - 0018-9499 .- 1558-1578. ; 49, s. 2279-2283
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The Medipix2 chip is a pixel detector readout chip consisting of 256×256 identical elements, each working in single photon counting mode for positive or negative input charge signals. Each pixel cell contains around 500 transistors and occupies a total surface area of 55 μm×55 μm. A 20 μm width octagonal opening connects the detector and the preamplifier input via bump-bonding. The preamplifier feedback provides compensation for detector leakage current on a pixel by pixel basis. Two identical pulse height discriminators are used to create a pulse if the preamplifier output falls within a defined energy window. These digital pulses are then counted with a 13-bit pseudo-random counter. The counter logic, based in a shift register, also behaves as the input/output register for the pixel. Each cell also has an 8-bit configuration register which allows masking, test-enabling and 3-bit individual threshold adjust for each discriminator. The chip can be configured in serial mode and read out either serially or in parallel. The chip is designed and manufactured in a 6-metal 0.25 μm CMOS technology. Preliminary measurements show very good agreement with simulations.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Electrical engineering, electronics and photonics
- Elektroteknik, elektronik och fotonik
Publication and Content Type
- ref (subject category)
- art (subject category)
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