Hall-Effect Sensors

Theory and Application


  • Edward Ramsden, Senior Engineer, Lattice Semiconductor, Hillsboro, OR, USA

Without sensors most electronic applications would not exist—sensors perform a vital function, namely providing an interface to the real world. Hall effect sensors, based on a magnetic phenomena, are one of the most commonly used sensing technologies today. In the 1970s it became possible to build Hall effect sensors on integrated circuits with onboard signal processing circuitry, vastly reducing the cost and enabling widespread practical use. One of the first major applications was in computer keyboards, replacing mechanical contacts. Hundreds of millions of these devices are now manufactured each year for use in a great variety of applications, including automobiles, computers, industrial control systems, cell phones, and many others. The importance of these sensors, however, contrasts with the limited information available. Many recent advances in miniaturization, smart sensor configurations, and networkable sensor technology have led to design changes and a need for reliable information. Most of the technical information on Hall effect sensors is supplied by sensor manufacturers and is slanted toward a particular product line. System design and control engineers need an independent, readable source of practical design information and technical details that is not product- or manufacturer-specific and that shows how Hall effect sensors work, how to interface to them, and how to apply them in a variety of uses. This book covers:• the physics behind Hall effect sensors• Hall effect transducers• transducer interfacing• integrated Hall effect sensors and how to interface to them• sensing techniques using Hall effect sensors• application-specific sensor ICs• relevant development and design toolsThis second edition is expanded and updated to reflect the latest advances in Hall effect devices and applications! Information about various sensor technologies is scarce, scattered and hard to locate. Most of it is either too theoretical for working engineers, or is manufacturer literature that can’t be entirely trusted. Engineers and engineering managers need a comprehensive, up-to-date, and accurate reference to use when scoping out their designs incorporating Hall effect sensors.
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PRIMARY MARKET: Electronics design engineers, mechanical engineers, and engineering managers working in a vast array of application areas—automotive, computers, medical, embedded, military, aerospace/aviation, , construction, etc.; instrumentation engineers; test engineersSECONDARY MARKET: electronics technicians; inhouse training departments of electronics manufacturers and other technology companies


Book information

  • Published: February 2006
  • Imprint: NEWNES
  • ISBN: 978-0-7506-7934-3

Table of Contents

Table of Contents1. Hall Effect Physics2. Practical Hall Effect Transducers3. Transducer Interfacing4. Integrated Sensors, Linear and Digital Devices5. Interfacing to Integrated Hall Sensors6. Proximity Sensing Techniques7. Current Sensing8. Speed and Timing Sensors9. Application-Specific Hall Sensor ICs10. Development Tools for Hall Effect SensorsAppendix A. Brief Introduction to MagneticsAppendix B. Suppliers ListGlossaryReferences and BibliographyIndex