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Rotary Sensor, Contactless Turning Knob MA800 from Monolithic Power Systems

Symmetry Electronics in Blogs on March 30, 2017

About Symmetry Electronics

Established in 1998, Symmetry Electronics, a Division of Braemac, is a global distributor of electronic components and systems. Combining premier components and comprehensive value-added services with an expert in-house engineering team, Symmetry supports engineers in the design, development, and deployment of a broad range of connected technologies. 

Exponential Technology Group Member

Acquired by Berkshire Hathaway company TTI, Inc. in 2017, Symmetry Electronics is a proud Exponential Technology Group (XTG) member. A collection of specialty semiconductor distributors and engineering design firms, XTG stands alongside industry leaders TTI Inc., Mouser Electronics, and Sager Electronics. Together, we provide a united global supply chain solution with the shared mission of simplifying engineering, offering affordable technologies, and assisting engineers in accelerating time to market. For more information about XTG, visit www.xponentialgroup.com.


The MagAlpha MA800 from Monolithic Power Systems is a simple-to-use, digital, magnetic sensor designed to replace analogic potentiometers or rotary switches. The sensor detects the absolute angular position of a permanent magnet attached to a rotating shaft.

Since the measurement is spatially confined, the user has flexibility in terms of magnet shapes and configurations. Typically, the MA800 is used with a diametrically magnetized cylinder of 3mm to 8mm in diameter.

The MA800 features programmable magnetic field strength thresholds which allow implementation of a push button function. These are readable via the register bits and also as output signals.

On-chip non-volatile memory provides storage for configuration parameters including the reference zero angle position and the magnetic field detection thresholds.


Source: http://www.monolithicpower.com/Products/Product-Detail/1201/MotorDrivers&PositionSensors/PositionSensors/MA800

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Symmetry Electronics in Blogs on March 30, 2017

About Symmetry Electronics

Established in 1998, Symmetry Electronics, a Division of Braemac, is a global distributor of electronic components and systems. Combining premier components and comprehensive value-added services with an expert in-house engineering team, Symmetry supports engineers in the design, development, and deployment of a broad range of connected technologies. 

Exponential Technology Group Member

Acquired by Berkshire Hathaway company TTI, Inc. in 2017, Symmetry Electronics is a proud Exponential Technology Group (XTG) member. A collection of specialty semiconductor distributors and engineering design firms, XTG stands alongside industry leaders TTI Inc., Mouser Electronics, and Sager Electronics. Together, we provide a united global supply chain solution with the shared mission of simplifying engineering, offering affordable technologies, and assisting engineers in accelerating time to market. For more information about XTG, visit www.xponentialgroup.com.

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