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A study on positive-feedback configuration of a bipolar SiC high temperature operational amplifier
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.ORCID iD: 0000-0001-8108-2631
2016 (English)In: Solid-State Electronics, ISSN 0038-1101, E-ISSN 1879-2405, Vol. 116, 33-37 p.Article in journal (Refereed) PublishedText
Abstract [en]

This paper reports on the design and implementation of an integrated operational amplifier in bipolar SiC, and elaborates on its operation in positive-feedback configuration. The opamp is studied in different feedback setups: closed-loop compensated amplifier, comparator with hysteresis (Schmitt trigger), and as a relaxation oscillator. Measurement results suggest a stable closed-loop opamp with similar to 40 dB gain, a Schmitt trigger with constant threshold levels over a wide temperature range, and a relaxation oscillator tested up to 540 kHz. All the setups were tested from 25 degrees C up to 500 degrees C.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 116, 33-37 p.
Keyword [en]
Silicon carbide, Integrated circuit, High temperature, Operational amplifier, Oscillator
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-180959DOI: 10.1016/j.sse.2015.11.028ISI: 000367542100007ScopusID: 2-s2.0-84949504616OAI: oai:DiVA.org:kth-180959DiVA: diva2:898850
Note

QC 20160129

Available from: 2016-01-29 Created: 2016-01-26 Last updated: 2016-01-29Bibliographically approved

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Kargarrazi, SalehZetterling, Carl-Mikael
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