MA800

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8-Bit, Digital, Contactless Angle Sensor with Push Button Function



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Product Description

The MagAlpha MA800 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. 

Product Features

  • 8-Bit Resolution Absolute Angle Encoder
  • Contactless Sensing for Long Life with No Wear
  • SPI and SSI Serial Interface for Digital Angle Readout and Chip Configuration
  • Programmable Magnetic Field Strength Detection for Push Button Press Detection
  • 3.3V, 11mA Supply
  • -40 to +125°C Operating Temperature
  • Available in a QFN-16 (3mmx3mm) Package

Additional Resources

Sensor Brochure

TBMA User Guide

Magnetic Design Tool

MagAlpha Arduino Library

MagAlpha Sample Code

AppNote: Selecting the Right Magnet

AppNote: Sense BLDC Rotor Position

AppNote: Replace Optical Encoders

Parametrics

  • PackageQFN-16 (3x3)
  • Vin (min) (V)3
  • Vin (max) (V)3.6
  • fcutoff (Hz)200
  • Latency (µs)2000
  • Isupply (mA)11.7
  • tstart-up (ms)20
  • GradeCatalog
  • Refresh Rate (kHz)1000
  • Output FormatSPI, SSI
  • Resolution (bits)8
  • Sensor PositionEnd-of-Shaft
  • Temp Range (°C)-40 to +125
  • Magnetic Field DetectionYes
  • Magnetic Field (min) (mT)30

Rotary Knob Eval Kit for the Angular Sensing and Push-Button Features of MagAlpha Sensors

The EVKT-KNOB kit evaluates the angular sensing and push-button features of the MA800. It is delivered assembled and with a knob and magnet. The sensor is mounted in an end-of-shaft configuration.

It requires the communications kit (EVKT-MACOM) and the Macom App Software (see below) to evaluate MagAlpha functionality and performance with your set-up, such as noise level, refresh rate, power-up time, and magnetic field dependence.

$50.00 + tax



Long Eval Board for MA800

The TBMA800-Q-LT-01A is the long test board for the MagAlpha magnetic position sensor MA800. The sensor is mounted on the edge of the board and can therefore be used in both side-shaft and end-of-shaft configurations.

It requires the communications kit (EVKT-MACOM) and the Macom App Software (see below) to evaluate MagAlpha functionality and performance with your set-up, such as noise level, refresh rate, power-up time, and magnetic field dependence.

In addition to this long test board, there is a round format version (RD) where the sensor is mounted in the center of the board for end-of-shaft configurations

$10.00 + tax



Round Eval Board for MA800

The TBMA800-Q-RD-01A is the round test board for the MagAlpha magnetic position sensor MA800. This configuration is used for end shaft sensing.

It requires the communications kit (EVKT-MACOM) and the Macom App Software (see below) to evaluate MagAlpha functionality and performance with your set-up, such as noise level, refresh rate, power-up time, and magnetic field dependence.

In addition to this round test board there is a long format version (LT) where the sensor is mounted on the edge of the board and can therefore be used in both side-shaft and end-of-shaft configurations.

$10.00 + tax



MagAlpha Communication Kit to Connect to Sensor Test Boards (TMBA) and Rotary Knob Kit, Requires Macom App Software 

The EVKT-MACOM is a communication kit for the MagAlpha magnetic position sensor family test boards (TBMA) and Rotary Knob kit (EVKT-KNOB). The kit contains a microcontroller motherboard, a collection of daughter boards adapted to different sensor boards, and the related cables.

This communicaiton kit requires Macom App Software and a sensor test board to evaluate MagAlpha functionality and performance with your set-up, such as noise level, refresh rate, power-up time, and magnetic field dependence.

$75.00 + tax