SLYU065 March   2023 TMAG6180-Q1 , TMAG6181-Q1

 

  1.   Abstract
  2.   Trademarks
  3. 1Overview
    1. 1.1 Kit Contents
    2. 1.2 Related Documentation From Texas Instruments
  4. 2Hardware
    1. 2.1 Features
  5. 3Operation
    1. 3.1 Quick Start Setup
    2. 3.2 EVM Operation
      1. 3.2.1 Software Setup
        1. 3.2.1.1 Driver Installation
        2. 3.2.1.2 Firmware
          1. 3.2.1.2.1 Firmware Debug
        3. 3.2.1.3 GUI Setup and Usage
          1. 3.2.1.3.1 Initial Setup
          2. 3.2.1.3.2 GUI Operation
  6. 4Schematics, PCB Layout, and Bill of Materials
    1. 4.1 Schematics
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials

1 Overview

TMAG6180 and TMAG6181 are each magnetic sensors built on anisotropic magnetoresistive (AMR) sensing technology. Typically, AMR sensors are only able to resolve 180 degree rotation, but with addtional integrated Hall-effect sensing, each sensor produces both sine and cosine differential outputs which are used to measure the absolute angular position of a rotating magnet. Each sensor is capable of detecting a full 360 degree rotation unlike typical AMR sensors. TMAG6180 provides additonal outputs Q0 and Q1 which can be used to determine the quadrant of rotation, while TMAG6181 provides a pulse width moduled (PWM) turns counter output that increments or decrements at each quadrant change. Using the information from these outputs, extending the 180 degree output to a full 360 position calculation is possible.

Table 1-1 TMAG6180 Device Summary
PRODUCTINPUT RANGEANALOG OUTPUTSDIGITAL OUTPUTSSUPPLY VOLTAGE RANGE
TMAG6180-Q120 mT - 1TDifferential Sine and CosineQ0 and Q1 Quadrant2.7 V - 5.5 V
TMAG6181-Q120 mT - 1TDifferential Sine and CosineTURNS2.7 V - 5.5 V

TMAG6180 is installed on the top side of the EVM and TMAG6181 is installed directly opposite on the bottom. During use with the EVM Graphical User Interface (GUI) differential outputs are sampled by an on-board ADS8354 which transmits the output readings over SPI to the TI sensor control board (TI-SCB).