SBASAI5B May   2023  – November 2023 TMAG5253

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  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 Magnetic Characteristics
    7. 6.7 Typical Characteristics
  8. 7 Parameter Measurement Information
    1. 7.1 Sensitivity Linearity
    2. 7.2 Ratiometric Architecture
    3. 7.3 Sensitivity Temperature Compensation
    4. 7.4 Quiescent Voltage Temperature Drift
    5. 7.5 Power-On Time
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Magnetic Flux Direction
      2. 8.3.2 Hall Element Location
      3. 8.3.3 Magnetic Response
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Selecting the Sensitivity Option
      2. 9.1.2 Temperature Compensation for Magnets
      3. 9.1.3 Adding a Low-Pass Filter
      4. 9.1.4 Designing With Multiple Sensors
      5. 9.1.5 Duty-Cycled, Low-Power Design
    2. 9.2 Typical Applications
      1. 9.2.1 Slide-By Displacement Sensing
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Head-On Displacement Sensing
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curve
      3. 9.2.3 Remote-Sensing Applications
    3. 9.3 Best Design Practices
    4. 9.4 Power Supply Recommendations
    5. 9.5 Layout
      1. 9.5.1 Layout Guidelines
      2. 9.5.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.1 Sensitivity Linearity

The device produces a linear response when the output voltage is within the specified VL range. Outside this range, sensitivity is reduced and nonlinear. Figure 7-1 shows the linearity of the magnetic response for bipolar version.

GUID-20221121-SS0I-5QTB-Z6QK-RTZD84TF2VGG-low.svg Figure 7-1 Linearity of the Magnetic Response (Bipolar)

Equation 1 calculates parameter BL, the minimum linear sensing range at 25°C, and takes the maximum quiescent voltage and sensitivity tolerance into account.

Equation 1. B L ( M I N ) = V L ( M A X )   –   V Q ( M A X )   S ( M A X )

Nonlinearity is the deviation of the output voltage from a linear relationship to the input current. Nonlinearity voltage, as shown in Figure 7-1, is the maximum voltage deviation from the best-fit line based on measured parameters (see Equation 2).

Equation 2. V N L = V O U T – ( B I N   ×   S F I T   +   V Q )  

where

  • VOUT is the voltage output at maximum deviation from best fit
  • BIN is the magnetic flux density at maximum deviation from best fit

  • SFIT is the best fit sensitivity of the device

  • VQ is quiescent voltage at zero magnetic field = VCC/2

The parameter SLE, Sensitivity Linearity error is the nonlinearity voltage ,VNL specified as a percentage of the full-scale linear output range (VFS) shown in Equation 3.

Equation 3. S L E = ( V N L   V F S )   ×   100 %

The parameter SSE defines symmetry error as the difference in sensitivity between any positive B value, SB and the negative B value of the same magnitude, S–B while the output voltage is within the VL range. This error only applies to the bipolar device option. Use Equation 4 to calculate the symmetry error.

Equation 4. S S E = ( S B     –   S – B   0.5   ×     ( S B   +   S – B ) )   ×   100 %

where

  • SB refers to the sensitivity at a positive field B
  • S–B refers to the sensitivity at a negative field B