SLYS053B November   2023  – June 2024 TMAG3001

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Electrical Characteristics
    6. 5.6  Temperature Sensor
    7. 5.7  Magnetic Characteristics For A1
    8. 5.8  Magnetic Characteristics For A2
    9. 5.9  Magnetic Temp Compensation Characteristics
    10. 5.10 I2C Interface Timing
    11. 5.11 Power up Timing
    12. 5.12 Timing Diagram
    13. 5.13 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Magnetic Flux Direction
      2. 6.3.2 Sensor Location
      3. 6.3.3 Interrupt Function
      4. 6.3.4 Wake on Change
      5. 6.3.5 Device I2C Address
      6. 6.3.6 Magnetic Range Selection
      7. 6.3.7 Update Rate Settings
    4. 6.4 Device Functional Modes
      1. 6.4.1 Standby (Trigger) Mode
      2. 6.4.2 Sleep Mode
      3. 6.4.3 Wake-Up and Sleep (W&S) Mode
      4. 6.4.4 Continuous Measure Mode
    5. 6.5 Programming
      1. 6.5.1 I2C Interface
        1. 6.5.1.1 Conversion Trigger
        2. 6.5.1.2 Bus Transactions
          1. 6.5.1.2.1 Three Channels I2C Write
          2. 6.5.1.2.2 General Call Write
          3. 6.5.1.2.3 Standard I2C Read
          4. 6.5.1.2.4 I2C Read Command for 16-bit Data
          5. 6.5.1.2.5 I2C Read Command for 8-Bit Data
          6. 6.5.1.2.6 I2C Read CRC
      2. 6.5.2 Data Definition
        1. 6.5.2.1 Magnetic Sensor Data
        2. 6.5.2.2 Temperature Sensor Data
        3. 6.5.2.3 Magnetic Sensor Gain Correction
        4. 6.5.2.4 Magnetic Sensor Offset Correction
        5. 6.5.2.5 Angle and Magnitude Data Definition
        6. 6.5.2.6 Angle Offset Correction
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Select the Sensitivity Option
      2. 7.1.2 Temperature Compensation for Magnets
      3. 7.1.3 Sensor Conversion
        1. 7.1.3.1 Continuous Conversion
        2. 7.1.3.2 Trigger Conversion
        3. 7.1.3.3 Pseudo-Simultaneous Sampling
      4. 7.1.4 Magnetic Limit Check
      5. 7.1.5 Magnitude Limit Check
      6. 7.1.6 Angle Limit Check
      7. 7.1.7 Switch Mode
        1. 7.1.7.1 Unipolar Switch Mode
        2. 7.1.7.2 Omnipolar Switch Mode
        3. 7.1.7.3 Tamper Detection
        4. 7.1.7.4 Angle Switch
        5. 7.1.7.5 Magnitude Switch (Button Press Detection)
      8. 7.1.8 Error Calculation During Linear Measurement
      9. 7.1.9 Error Calculation During Angular Measurement
    2. 7.2 Typical Application
      1. 7.2.1 Angle Measurement
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
          1. 7.2.1.2.1 Gain Adjustment for Angle Measurement
        3. 7.2.1.3 Application Curves
    3. 7.3 Best Design Practices
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Example
  9. 8 Register Map
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)

7.1.6 Angle Limit Check

The TMAG3001 features an integrated angle calculation so the device can be used as an angle switch for any two axes set by ANGLE_EN. The device can be configured to be sensitive for angle thresholds when THR_SEL[1:0] is set to 1h. When THR_SEL[1:0] is set to 1h, the THR_Config_1 register acts as A_THR_REF and THR_Config_2 acts as A_THR_BAND. The Angle limit checks can be configured using the angle threshold reference set by A_THR_REF and the threshold band set by the A_THR_BAND. The reference angle threshold, A_THR_REF is absolute angle coded on 8 bits (as shown in table), with a resolution of 2 degrees per LSB and a maximum range of 360 degrees. A_THR_BAND is also absolute angle coded on 8 bits and has a resolution of 1 degree per LSB, with a maximum range of up to 180 degrees.

Table 7-4 Register Configuration for Angle Limit Check
Register Name Register alias when THR_SEL[1:0] = 1h Description

THR_Config_1

A_THR_REF

Sets the angle threshold reference
THR_Config_2 A_THR_BAND Sets the

Threshold region around the reference
THR_Config_3 Angle_Offset[7:0] Sets the user defined angle offset

Angle Limit Check and Angle Limit Cross Check show examples of angle limit cross detection events while the measured angle goes above or below, exiting an angle band, and entering an angle band. The device keeps generating an interrupt with each new conversion if the measured angle remains in the shaded regions in the figures. The MAG_THR_DIR register bit helps select the out of range regions for threshold crossings.

TMAG3001 Angle Limit Check With MAG_THR_DIR = 0h, THR_SEL[1:0] = 1h, INT_STATE = 1hFigure 7-8 Angle Limit Check With MAG_THR_DIR = 0h, THR_SEL[1:0] = 1h, INT_STATE = 1h
TMAG3001 Angle Limit Cross Check With MAG_THR_DIR =1b, THR_SEL=01b , INT_STATE=1bFigure 7-9 Angle Limit Cross Check With MAG_THR_DIR =1b, THR_SEL=01b , INT_STATE=1b