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Article: New findings reported from S.V. Lozanova and co-authors describe advances in sensor research.
- Article from:
- Electronics Newsweekly
- Article date:
- August 12, 2009
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"A new class of Hall microsensors with minimal design complexity was suggested and experimentally tested. The devices consisting in n-Si substrate and three n(+)-strip contacts only are sensitive to a magnetic field parallel to the chip surface," scientists in Sofia, Bulgaria report.
"Using a reference voltage generating with a specific bridge circuitry, the linear Hall voltage is extracted and the quadratic geometrical magnetoresistance is fully compensated. The internal noise of the design with a Hall contact located outside the sensor active region is at least ten times smaller than those of the three-contact element with an inside placed output electrode. ...