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Journal of Material Sciences
ISSN: 2321-6212
I n t e r n a t i o n a l C o n f e r e n c e o n
Metal, Mining and
Magnetic Materials
N o v e m b e r 0 1 - 0 2 , 2 0 1 8
P a r i s , F r a n c e
Metal and Magnetism 2018
Advanced magnetic sensor design: high performance and
miniaturization challenges in magnetic sensing
Sergey Y Yurish
1, 2
1
International Frequency Sensor Association (IFSA), Spain
2
Frequency-to-Digital (F2D), Ireland
F
rom the six sensor signal domains, the magnetic one takes an important place. Today many manufacturers produce
different magnetic sensors and devices on its basis: Hall effect sensors, magnetoresistors, magnetodiodes, GMR, SQUID,
magnetometers, navigation compasses, etc. for different applications. They allow contactless measurements of mechanical and
electrical quantities, such as angle of rotation, angular speed, linear position, linear speed, and current. The global market for
magnetic sensors has been growing at a steady pace, both in terms of technology and applications. The global magnetic sensor
market is projected to reach US $ 3.33 billion by 2025, at a compound annual growth rate (CAGR) of 6.8 h sector, smartphones and
consumer wearable devices such as smartwatches and healthmonitoring devices. Smart magnetic sensors with sensing elements
and associated electronics such as amplification and signal conditioning on the same die are the latest trend. However, below the
50 nm technology, the design of analog and mixed-signal circuit becomes perceptibly more difficult. Such analog components
are not process compatible. This is particularly true for low supply voltage near 1 V or below. The result is not only an increased
design effort, long development time, high risk, cost and the need for very high volumes, but also growing power consumption,
lost performance and flexibility. But the proposed advanced design approach eliminates these technological limitations. Digital
magnetic sensors can be built based on so-called quasi-digital magnetic sensing devices with frequency, duty-cycle or PWM
output and high-performance universal frequency-to-digital converters. This solution let us achieve many advantages due to
properties of frequency-time signals as informative parameters of sensor’s output and met all modern microminiaturization
requirements. Such advanced design approach significantly reduced production costs, time-to-market, increased metrological
performance, robustness and simplify the design process. Different examples of digital magnetic sensors and sensor systems
will be given and discussed in details.
SYurish@sensorsportal.comJ Mat. Sci. 2018, Volume:6
DOI: 10.4172/2321-6212-C7-033