SLYS044B December   2021  – May 2024 TMAG5328

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 Output Type
      4. 6.3.4 Sampling Rate
      5. 6.3.5 Adjustable Threshold
        1. 6.3.5.1 Adjustable Resistor
        2. 6.3.5.2 Adjustable Voltage
      6. 6.3.6 Hall Element Location
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Valid TMAG5328 Configurations
    2. 7.2 Typical Applications
      1. 7.2.1 Refrigerator Door Open/Close Detection
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Nomenclature
    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

Package Options

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

6.3.5 Adjustable Threshold

While most Hall Effect switch sensors have fixed magnetic characteristics, the TMAG5328 offers a wide range of adjustable thresholds. The user can use the "ADJ" pin to set the value of BOP threshold. This pin can be used in two different ways. A resistor or a voltage source can be applied on "ADJ". In both scenarios, the resistor or voltage value defines the position of the BOP. While the BOP can be adjusted, the hysteresis has a fixed value. BRP is therefore defined as BOP – Hysteresis.

The TMAG5328A1D (duty cycled version) has an 80µA current generated on pin "ADJ" when the part goes into active mode. The device then reads the "ADJ" pin and defines the value of BOP. The TMAG5328 supports adjusting the BOP dynamically. If the "ADJ" pin value is adjusted while the sensor is in sleep mode, the BOP updates at the next active period of the device. Consequently, the maximum time the internal BOP threshold can take to update for the TMAG5328A1D version is equal to the period of magnetic sampling, ts (50ms).

The TMAG5328A1Z (continuous time version) has an 80µA current continuously generated on pin "ADJ" to dynamically adjust the BOP threshold if desired. The maximum time the internal BOP threshold can take to update for the TMAG5328A1Z version is 25µs.