SBVS058D June   2005  – April 2026 REF3212 , REF3220 , REF3225 , REF3230 , REF3233 , REF3240

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 Electrical Characteristics
    4. 5.4 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
      1. 6.1.1 Supply Voltage
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Thermal Hysteresis
      2. 6.3.2 Temperature Drift
      3. 6.3.3 Noise Performance
      4. 6.3.4 Load Regulation
    4. 6.4 Device Functional Modes
      1. 6.4.1 Shutdown
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Long-Term Stability
    2. 7.2 Typical Application
      1. 7.2.1 Detailed Design Procedure
        1. 7.2.1.1 Negative Reference Voltage
        2. 7.2.1.2 Data Acquisition
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

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6.3.4 Load Regulation

Load regulation is defined as the change in output voltage as a result of changes in load current. The load regulation of the REF32xx is measured using force and sense contacts, as shown in Figure 6-5.

REF3212 REF3220 REF3225 REF3230 REF3233 REF3240 Accurate Load Regulation of REF32xxFigure 6-5 Accurate Load Regulation of REF32xx

The force and sense lines can be used to effectively eliminate the impact of contact and trace resistance, resulting in accurate voltage at the load. By connecting the force and sense lines at the load, the REF32xx compensates for the contact and trace resistances because it measures and adjusts the voltage actually delivered at the load.

The GND_S pin is connected to the internal ground of the device through ESD protection diodes. Because of that connection, the maximum differential voltage between the GND_S and GND_F pins must be kept below 200mV to prevent these diodes from unintentionally turning on.