CMOS-based Micro-fluxgate with Racetrack Core and Solenoid Coils
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F24%3A00376849" target="_blank" >RIV/68407700:21230/24:00376849 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.sna.2024.115886" target="_blank" >https://doi.org/10.1016/j.sna.2024.115886</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.sna.2024.115886" target="_blank" >10.1016/j.sna.2024.115886</a>
Alternative languages
Result language
angličtina
Original language name
CMOS-based Micro-fluxgate with Racetrack Core and Solenoid Coils
Original language description
This work introduces an integrated fluxgate sensor fabricated using CMOS chip technology. The sensor uses a “racetrack” shape of the core. The material used for the core is VITROVAC 6025F, and the shape was laser-cut from 25 um thick foil. The coils are solenoids fabricated using metal layers of the chip and bonding wires. Sensing and excitation coils have 60 and 40 turns respectively. TSMC D35 technology was used for fabrication. The size of the core is 8 mm x 1.75 mm. Dimensions of the chip are 8 mm x 2.7 mm (21.6 mm2). The sensor was tested in open-loop operation using a sinewave excitation. Sensitivity increases with frequency up to 1.5 MHz, reaching 5000 V/T. This is a significantly higher value than what can be achieved using a flat pick-up coil (around 10 V/T). Fully saturating the core requires a 110 mA excitation current, leading to 300 mW power dissipation in the coil. The Core loss is 100 mW at 1 MHz excitation. The Noise at 1 Hz may be as low as 2nT/sqrt(Hz) depending on excitation signal parameters. The typical offset is below 1 uT.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
<a href="/en/project/GA24-12705S" target="_blank" >GA24-12705S: Novel Magnetic Position Sensors</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Sensors and Actuators A: Physical
ISSN
0924-4247
e-ISSN
1873-3069
Volume of the periodical
379
Issue of the periodical within the volume
December
Country of publishing house
CH - SWITZERLAND
Number of pages
8
Pages from-to
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UT code for WoS article
001316348100001
EID of the result in the Scopus database
2-s2.0-85203490439