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A low propagation delay dispersion comparator for a level-crossing AD converter
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.ORCID iD: 0000-0003-4958-146X
Oulu University.
2010 (English)In: Analog Integrated Circuits and Signal Processing, ISSN 0925-1030, E-ISSN 1573-1979, Vol. 62, no 1, p. 51-61Article in journal (Refereed) Published
Abstract [en]

This paper presents the design of a continuous time voltage comparator with low propagation delay dispersion. The comparator is intended to be used as a building block for a level-crossing AD converter: a type of AD converter where the sampling moments are triggered when an input signal crosses predetermined threshold levels. This type of system sets very high demands on the time measurement and the comparator to achieve the desired performance. The comparator design is based on several techniques to minimize the comparator propagation delay dispersion. The comparator has been implemented in a 0.35 μm BiCMOS process. Measured results show good agreement with simulations. The slew rate related propagation delay dispersion is measured to 90 ps for an input frequency range from 3 to 10 MHz and amplitudes from 200 mV to 1.65 V. The comparator static power consumption is 9 mW.

Place, publisher, year, edition, pages
2010. Vol. 62, no 1, p. 51-61
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
URN: urn:nbn:se:ltu:diva-11262DOI: 10.1007/s10470-009-9328-4ISI: 000273030600007Scopus ID: 2-s2.0-75549088138Local ID: a31d9540-c29a-11dd-a054-000ea68e967bOAI: oai:DiVA.org:ltu-11262DiVA, id: diva2:984211
Note
Validerad; 2010; 20081205 (jonny)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Kozmin, KirillJohansson, Jonny

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