ZHCSQY7 september   2022 TMAG5173-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  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
    8. 6.8  Magnetic Characteristics For A2
    9. 6.9  Magnetic Temp Compensation Characteristics
    10. 6.10 I2C Interface Timing
    11. 6.11 Power up Timing
    12. 6.12 Typical Characteristics
  8. 7 详细说明
    1. 7.1 概述
    2. 7.2 功能方框图
    3. 7.3 Feature Description
      1. 7.3.1 磁通量方向
      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 Wake-up and Sleep (W&S) Mode
      4. 7.4.4 Continuous Measure Mode
    5. 7.5 Programming
      1. 7.5.1 I2C 接口
        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 标准 I2C 写入
          2. 7.5.1.3.2 通用广播写入
          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 数据定义
        1. 7.5.2.1 磁传感器数据
        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 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 Error Calculation During Linear Measurement
      6. 8.1.6 Error Calculation During Angular Measurement
    2. 8.2 Typical Applications
      1. 8.2.1 I2C Address Expansion
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
      2. 8.2.2 Angle Measurement
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Gain Adjustment for Angle Measurement
        3. 8.2.2.3 Application Curves
    3. 8.3 What to Do and What Not to Do
    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 文档支持
      1. 9.1.1 Related Documentation
    2. 9.2 接收文档更新通知
    3. 9.3 支持资源
    4. 9.4 商标
    5. 9.5 静电放电警告
    6. 9.6 术语表
  11. 10机械、封装和可订购信息
    1. 10.1 Package Option Addendum
    2. 10.2 Tape and Reel Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

7.5.2.3 Angle and Magnitude Data Definition

The TMAG5173-Q1 calculates the angle from a pair of magnetic axes based off the ANGLE_EN register bits setting. Figure 7-17 shows the angle information stored in the ANGLE_RESULT_MSB and ANGLE_RESULT_LSB registers. Bits D04-D12 store angle integer value from 0 to 360 degree. Bits D00-D03 store fractional angle value. The 3-MSB bits are always populated as b000. Use Equation 14 to calculate the angle value.

Equation 14. A = ∑ i = 4 12 D i × 2 i - 4 + ∑ i = 0 3 D i × 2 i 16

where

  • A is the angle measured in degree.
  • Di is the data bit as shown in Figure 7-17.

For example: a 354.50 degree is populated as 0001 0110 0010 1000b and a 17.25 degree is populated as 000 0001 0001 0100b.

GUID-C7BDC67F-675A-4B66-A2D8-48B5EEC8F936-low.gif Figure 7-17 Angle Data Definition

During the angle calculation, use Equation 15 to calculate the resultant vector magnitude.

Equation 15. M = M A D C C h 1 2 + M A D C C h 2 2

where

  • MADCCh1, MADCCh2 are the ADC codes of the two magnetic channels selected for the angle calculation.

Figure 7-18 shows the magnitude value stored in the MAGNITUDE_RESULT register. For on-axis angular measurement the magnitude value should remain constant across the full 360° measurement.

GUID-20210604-CA0I-LG9Z-GWSL-ZRDSQN7Z3HSM-low.svg Figure 7-18 Magnitude Result Data Definition