SLYS035A September   2022  – September 2023 TMAG5173-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics
    6. 6.6  Temperature Sensor
    7. 6.7  Magnetic Characteristics For A1, B1, C1, D1
    8. 6.8  Magnetic Characteristics For A2, B2, C2, D2
    9. 6.9  Magnetic Temp Compensation Characteristics
    10. 6.10 I2C Interface Timing
    11. 6.11 Power up Timing
    12. 6.12 Timing Diagram
    13. 6.13 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Magnetic Flux Direction
      2. 7.3.2 Sensor Location
      3. 7.3.3 Interrupt Function
      4. 7.3.4 Device I2C Address
      5. 7.3.5 Magnetic Range Selection
      6. 7.3.6 Update Rate Settings
    4. 7.4 Device Functional Modes
      1. 7.4.1 Standby (Trigger) Mode
      2. 7.4.2 Sleep Mode
      3. 7.4.3 Continuous Measure Mode
    5. 7.5 Programming
      1. 7.5.1 I2C Interface
        1. 7.5.1.1 SCL
        2. 7.5.1.2 SDA
        3. 7.5.1.3 I2C Read/Write
          1. 7.5.1.3.1 Standard I2C Write
          2. 7.5.1.3.2 General Call Write
          3. 7.5.1.3.3 Standard 3-Byte I2C Read
          4. 7.5.1.3.4 1-Byte I2C Read Command for 16-Bit Data
          5. 7.5.1.3.5 1-Byte I2C Read Command for 8-Bit Data
          6. 7.5.1.3.6 I2C Read CRC
      2. 7.5.2 Data Definition
        1. 7.5.2.1 Magnetic Sensor Data
        2. 7.5.2.2 Temperature Sensor Data
        3. 7.5.2.3 Angle and Magnitude Data Definition
        4. 7.5.2.4 Magnetic Sensor Offset Correction
    6. 7.6 TMAG5173-Q1 Registers
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Select the Sensitivity Option
      2. 8.1.2 Temperature Compensation for Magnets
      3. 8.1.3 Sensor Conversion
        1. 8.1.3.1 Continuous Conversion
        2. 8.1.3.2 Trigger Conversion
        3. 8.1.3.3 Pseudo-Simultaneous Sampling
      4. 8.1.4 Magnetic Limit Check
      5. 8.1.5 Magnetic Threshold Band Cross Detection
      6. 8.1.6 Error Calculation During Linear Measurement
      7. 8.1.7 Error Calculation During Angular Measurement
    2. 8.2 Typical Applications
      1. 8.2.1 Angle Measurement
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Gain Adjustment for Angle Measurement
        3. 8.2.1.3 Application Curves
      2. 8.2.2 I2C Address Expansion
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
    3. 8.3 Best Design Practices
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
  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. 10Mechanical, Packaging, and Orderable Information

7.5.2.2 Temperature Sensor Data

The TMAG5173-Q1 will measure temperature from –40°C to 170°C. The temperature sensor data are stored in T_MSB_RESULT and T_LSB_RESULT registers. Figure 7-16 shows the sensor output stored in a 16-bit 2's complement format in two 8-bit registers. The data can be retrieved as 16-bit format combining both MSB and LSB registers, or as 8-bit format through the MSB register.

TMAG5173-Q1 Temperature Sensor Data Definition Figure 7-16 Temperature Sensor Data Definition

Use Equation 19 to calculate the measured temperature in degree Celsius for 16-bit data, and use Equation 21 to calculate the measured temperature for 8-bit data.

Equation 12. T = T S E N S _ T 0 + T A D C _ T - T A D C _ T 0 T A D C _ R E S
Equation 13. T = T S E N S _ T 0 + 256 × T A D C _ T - T A D C _ T 0 256 T A D C _ R E S

where

  • T is the measured temperature in degree Celsius.
  • TSENS_T0 as listed in the Electrical Characteristics table.
  • TADC_RES is the change in ADC code per degree Celsius.
  • TADC_T0 as listed in the Electrical Characteristics table.
  • TADC_T is the measured ADC code for temperature T.