SBAS644C April   2018  – December 2025 DRV5056

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 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 Magnetic Response
      3. 6.3.3 Sensitivity Linearity
      4. 6.3.4 Ratiometric Architecture
      5. 6.3.5 Operating VCC Ranges
      6. 6.3.6 Sensitivity Temperature Compensation For Magnets
      7. 6.3.7 Power-On Time
      8. 6.3.8 Hall Element Location
    4. 6.4 Device Functional Modes
  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 Adding a Low-Pass Filter
      4. 7.1.4 Designing for Wire Break Detection
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 Application Curve
    3. 7.3 Best System Practices
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Examples
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

6.3.2 Magnetic Response

The DRV5056 outputs an analog voltage according to Equation 1 when in the presence of a magnetic field:

Equation 1. V O U T = V Q + B × S e n s i t i v i t y ( 25 ° C ) × 1 + S T C × T A - 25 ° C

where

  • VQ is typically 600mV
  • B is the applied magnetic flux density
  • Sensitivity(25°C) depends on the device option and VCC
  • STC is typically 0.12%/°C for device options DRV5056Ax and is 0%/°C for DRV5056Zx options
  • TA is the ambient temperature
  • VOUT is within the VL range

As an example, consider the DRV5056A3 with VCC = 3.3V, a temperature of 50°C, and 67mT applied.
Excluding tolerances, VOUT = 600mV + 67 mT × (30mV/mT × [1 + 0.0012/°C × (50°C – 25°C)]) = 2.67V.

The DRV5056 only responds to the flux density of a magnetic south pole.