A study on positive-feedback configuration of a bipolar SiC high temperature operational amplifier
2016 (English)In: Solid-State Electronics, ISSN 0038-1101, E-ISSN 1879-2405, Vol. 116, 33-37 p.Article in journal (Refereed) PublishedText
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.
Silicon carbide, Integrated circuit, High temperature, Operational amplifier, Oscillator
IdentifiersURN: 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
QC 201601292016-01-292016-01-262016-01-29Bibliographically approved