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Time stretcher for a time-to-digital converter with a precisely matched current mirror
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
2014 (English)In: 2014 IEEE International System on Chip Conference (SOCC 2014): Las Vegas, 2-5 September 2014, Piscataway, NJ: IEEE Communications Society, 2014, p. 225-230, article id 6948932Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents an approach for the design ofa time stretcher based on charging and discharging a capacitorby currents with a ratio equal to the desired stretch factor. Thestretched time interval can be measured by using a time-to-digitalconverter to achieve improved system resolution. Expressionsfor the current source output impedance and transistor arearequired to reach a specified linearity and matching are derived.The realization uses wide-swing current mirrors to achieve therequired output impedance at an acceptable voltage swing at thecapacitor. The derived expressions and the overall design arevalidated with schematic and extracted simulations in a 0.35 μmCMOS process technology.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2014. p. 225-230, article id 6948932
Series
International System on Chip Conference, ISSN 2164-1676
Keyword [en]
Time to digital converter, Time stretcher, stretch factor, current mirror, Analogue time expansion, comparator, Technology - Electrical engineering, electronics and photonics
Keyword [sv]
Teknikvetenskap - Elektroteknik, elektronik och fotonik
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
URN: urn:nbn:se:ltu:diva-35307DOI: 10.1109/SOCC.2014.6948932Scopus ID: 84911948291Local ID: 9cb0cd0d-5702-4481-9e8d-2672bb47f4fcISBN: 9781479933785 (print)OAI: oai:DiVA.org:ltu-35307DiVA: diva2:1008560
Conference
IEEE International System-on-Chip Conference : 02/09/2014 - 09/09/2014
Note
Validerad; 2015; Nivå 1; 20140701 (tanmuh)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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ec7b3536f8b67a6115dbdfcc024f6f9ec979bd549ceb0ff77335f871686ceac077337c9ec2f1325a096665a8c98835065c92aac16ca837823ea78854fc5813c1
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