SLYS052A March   2023  – December 2023 TMAG5170D-Q1

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 Magnetic Characteristics
    7. 5.7 Power up Timing
    8. 5.8 SPI Interface Timing
    9. 5.9 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 Magnetic Range Selection
      4. 6.3.4 Update Rate Settings
      5. 6.3.5 ALERT Function
        1. 6.3.5.1 Interrupt and Trigger Mode
        2. 6.3.5.2 Magnetic Switch Mode
      6. 6.3.6 Threshold Count
      7. 6.3.7 Diagnostics
        1. 6.3.7.1  Memory Cyclic Redundancy Check (CRC)
        2. 6.3.7.2  ALERT Integrity Check
        3. 6.3.7.3  VCC Check
        4. 6.3.7.4  Internal LDO Undervoltage Check
        5. 6.3.7.5  Digital Core Power-On Reset Check
        6. 6.3.7.6  SDO Output Check
        7. 6.3.7.7  Communication Cyclic Redundancy Check (CRC)
        8. 6.3.7.8  Oscillator Integrity Check
        9. 6.3.7.9  Magnetic Field Threshold Check
        10. 6.3.7.10 Temperature Alert Check
        11. 6.3.7.11 Analog Front-End (AFE) Check
        12. 6.3.7.12 Hall Resistance and Switch Matrix Check
        13. 6.3.7.13 Hall Offset Check
        14. 6.3.7.14 ADC Check
    4. 6.4 Device Functional Modes
      1. 6.4.1 Operating Modes
        1. 6.4.1.1 Active Mode
        2. 6.4.1.2 Standby Mode
        3. 6.4.1.3 Configuration Mode (DEFAULT)
        4. 6.4.1.4 Sleep Mode
        5. 6.4.1.5 Wake-Up and Sleep Mode
        6. 6.4.1.6 Deep-Sleep Mode
    5. 6.5 Programming
      1. 6.5.1 Data Definition
        1. 6.5.1.1 Magnetic Sensor Data
        2. 6.5.1.2 Temperature Sensor Data
        3. 6.5.1.3 Magnetic Sensor Offset Correction
        4. 6.5.1.4 Angle and Magnitude Data Definition
      2. 6.5.2 Serial Peripheral Interface (SPI)
        1. 6.5.2.1 SCK
        2. 6.5.2.2 CS
        3. 6.5.2.3 SDI
        4. 6.5.2.4 SDO
          1. 6.5.2.4.1 Regular 32-Bit SDO Read
          2. 6.5.2.4.2 Special 32-Bit SDO Read
        5. 6.5.2.5 SPI CRC
        6. 6.5.2.6 SPI Frame
          1. 6.5.2.6.1 32-Bit Read Frame
          2. 6.5.2.6.2 32-Bit Write Frame
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Selecting 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 Error Calculation During Linear Measurement
      5. 7.1.5 Error Calculation During Angular Measurement
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
        1. 7.2.1.1 Gain Adjustment for Angle Measurement
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 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 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

6.5.1.3 Magnetic Sensor Offset Correction

Figure 6-5 shows that the TMAG5170D-Q1 can enable offset correction for a pair of magnetic axes. The magnetic axes and order are selected based off the ANGLE_EN register bit settings. The MAG_OFFSET_CONFIG register stores the offset values to be corrected in 2's complement data format. The selection and order of the sensors are defined in the ANGLE_EN register bits setting. The default value of these offset correction registers are set as zero.

GUID-943C3576-38B8-480C-BBF0-3C0055ABF426-low.svg Figure 6-5 Magnetic Sensor Data Offset Correction

The MAG_OFFSET_CONFIG register contains OFFSET_VALUE1 and OFFSET_VALUE2 that are added to the sensor conversion results as defined by of the OFFSET_SELECTION field of the MAG_OFFSET_CONFIG register. The data format is 2's complement format with a LSB size define by the range.

  • 50 mT: 25 µT/LSB
  • 25 mT: 12.5 µT/LSB
  • 100 mT: 50 µT/LSB
  • 150 mT: 75 µT/LSB
  • 75 mT: 37.5 µT/LSB
  • 300 mT: 150 µT/LSB
Table 6-6 7-bit Magnetic Sensor Offset Correction Data Format. Two decimal places are shown.
Magnetic Offset (mT) Offset_Config_x[7:0]
Range = 50 mT Range = 25 mT Range = 100 mT Range = 150 mT Range = 75 mT Range = 300 mT BINARY HEX
-1.60 -0.80 -3.20 -4.80 -2.40 -9.60 100 0000 40h
-1.35 -0.67 -2.70 -4.05 -2.02 -8.10 100 1010 4Ah
-0.02 -0.01 -0.05 -0.07 -0.03 -0.15 111 1111 7Fh
0 0 0 0 0 0 000 0000 00h
0.02 0.01 0.05 0.07 0.03 0.15 000 0001 01h
1.35 0.67 2.70 4.05 2.02 8.10 011 0110 36h
1.57 0.78 3.15 4.72 2.36 9.45 011 1111 3Fh