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

6.5.1.4 Angle and Magnitude Data Definition

The TMAG5170D-Q1 calculates the angle based off the ANGLE_EN register bit settings. The 11-bit ANGLE_RESULT value stores the angle information. The data format is an unsigned angle value with a LSB size of 0.25°. The TMAG5170D-Q1 CORDIC offers angle resolution of 0.25 degree. The TMAG170 code example software package has functions that can be ported to the system microcontroller for an accurate but computationally inexpensive angle calculation using the TMAG5170D-Q1 axes readings.

Table 6-7 11-Bit Angle Data Format
ANGLE (°) ANGLE_RESULT[10:0]
BINARY HEX
0 000 0000 0000 000h
0.25 000 0000 0001 001h
90 001 0110 1000 168h
180 010 1101 0000 2D0h
270 100 0011 1000 438h
360 101 1010 0000 5A0h

During the angle calculation, the MAGNITUDE_RESULT[13:0] stores the resultant vector magnitude in the MAGNITUDE_RESULT register. MAGNITUDE_RESULT is an unsigned value with a LSB size that depends on the range of device.

  • 50 mT: 40.96 LSB/mT
  • 25 mT: 81.92 LSB/mT
  • 100 mT: 20.48 LSB/mT
  • 150 mT: 13.653 LSB/mT
  • 75 mT: 27.306 LSB/mT
  • 300 mT: 6.826 LSB/mT

For on-axis angular measurement the magnitude value should remain constant across the full 360° measurement.

Table 6-8 13-bit Magnitude Data Format. Only 3 decimal places are shown.
Magnitude (mT) MAGNITUDE_RESULT[13:0]
Range = 50 mT Range = 25 mT Range = 100 mT Range = 150 mT Range = 75 mT Range = 300 mT BINARY HEX
0 0 0 0 0 0 0 0000 0000 0000 0000h
0.024 0.012 0.048 0.073 0.036 0.146 0 0000 0000 0001 0001h
6.225 3.112 12.451 18.676 9.338 37.353 0 0000 1111 1111 00FFh
35.351 17.675 70.703 106.054 53.027 212.109 0 0101 1010 1000 05A8h
70.703 35.351 141.406 212.109 106.054 424.218 0 1011 0101 0000 0B50h