Exploring AMR Sensors’ Performance Limits Using an Agile, High-Speed Set–Reset Pulse Generation Circuit
| Autor: | Neoclis Hadjigeorgiou, Konstantinos Papafotis, Paul P. Sotiriadis |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Offset (computer science) Magnetoresistance Computer science business.industry Electrical engineering Polarization (waves) 01 natural sciences Electronic Optical and Magnetic Materials Magnetic field Power consumption 0103 physical sciences Electrical and Electronic Engineering business Order of magnitude Agile software development Electronic circuit |
| Zdroj: | IEEE Transactions on Magnetics. 56:1-10 |
| ISSN: | 1941-0069 0018-9464 |
| Popis: | This work explores the performance characteristics of anisotropic magnetoresistance (AMR) sensors when operating with very short set/reset current polarization pulses. AMR sensor’s sensitivity, offset, and power consumption are measured and reported using the sequences of set/reset polarization pulses of different durations. In order to perform these measurements, a circuit topology for generating agile current pulses with variable duration down to 40 ns, i.e., about fifty times shorter than similar circuits reported in the literature, was devised. It is demonstrated that AMR sensors maintain their sensitivity and offset even with polarization pulses two orders of magnitude shorter than those recommended in the literature. This allows for the faster magnetic field sampling and the lower power consumption which can significantly broaden the application space of AMR sensors. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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