SBVS046E December   2003  – April 2026 REF31

PRODUCTION DATA  

  1.   1
  2. Features
  3. Applications
  4. Description
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. 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 Typical Characteristics
  8. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Supply Voltage
      2. 7.3.2 Thermal Hysteresis
      3. 7.3.3 Temperature Drift
      4. 7.3.4 Noise Performance
      5. 7.3.5 Long-Term Stability
      6. 7.3.6 Load Regulation
    4. 7.4 Device Functional Modes
      1. 7.4.1 Negative Reference Voltage
      2. 7.4.2 Data Acquisition
  9. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. Device and Documentation Support
    1. 9.1 Device Support
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

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机械数据 (封装 | 引脚)
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订购信息

Typical Characteristics

At TA = 25°C, VIN = 5V power supply, and REF3125 is used for typical characteristic measurements, unless otherwise noted.

REF31 Temperature Drift (0°C to 70°C)Figure 6-1 Temperature Drift (0°C to 70°C)
REF31 Output Voltage vs TemperatureFigure 6-3 Output Voltage vs Temperature
REF31 Quiescent Current vs TemperatureFigure 6-5 Quiescent Current vs Temperature
REF31 PSRR vs FrequencyFigure 6-7 PSRR vs Frequency
REF31 Output Voltage vs Load CurrentFigure 6-9 Output Voltage vs Load Current
REF31 0.1Hz to 10Hz NoiseFigure 6-11 0.1Hz to 10Hz Noise
REF31 Line Transient CL = 0pFFigure 6-13 Line Transient CL = 0pF
REF31 Load Transient CL = 0pF, ±10mA Output PulseFigure 6-15 Load Transient CL = 0pF, ±10mA Output Pulse
REF31 Load Transient CL = 0pF, ±1mA Output PulseFigure 6-17 Load Transient CL = 0pF, ±1mA Output Pulse
REF31 REF3125 Start-UpFigure 6-19 REF3125 Start-Up
REF31 Temperature Drift (–40°C to +125°C)Figure 6-2 Temperature Drift (–40°C to +125°C)
REF31 Dropout Voltage vs Load CurrentFigure 6-4 Dropout Voltage vs Load Current
REF31 Output Impedance vs FrequencyFigure 6-6 Output Impedance vs Frequency
REF31 Output vs SupplyFigure 6-8 Output vs Supply
REF31 Step Response, CL = 0, 5V Start-UpFigure 6-10 Step Response, CL = 0, 5V Start-Up
REF31 REF3112 Long-Term StabilityFigure 6-12 REF3112 Long-Term Stability
REF31 Line Transient CL = 10μFFigure 6-14 Line Transient CL = 10μF
REF31 Load Transient CL = 1 µF, ±10mA Output PulseFigure 6-16 Load Transient CL = 1 µF, ±10mA Output Pulse
REF31 Load Transient CL = 1 µF, ±1mA Output PulseFigure 6-18 Load Transient CL = 1 µF, ±1mA Output Pulse