SNAS794A June   2020  – June 2020 REF4132

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      Simplified Schematic
      2.      Dropout vs. Current Load Over Temperature
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
    1.     Pin Functions
  7. Specifications
    1. 7.1      Absolute Maximum Ratings
    2. 7.2      ESD Ratings
    3. 7.3      Recommended Operating Conditions
    4. 7.4      Thermal Information
    5. Table 1. Electrical Characteristics
    6. 7.5      Typical Characteristics
  8. Parameter Measurement Information
    1. 8.1 Solder Heat Shift
    2. 8.2 Long-Term Stability
    3. 8.3 Thermal Hysteresis
    4. 8.4 Power Dissipation
    5. 8.5 Noise Performance
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Supply Voltage
      2. 9.3.2 Low Temperature Drift
      3. 9.3.3 Load Current
    4. 9.4 Device Functional Modes
      1. 9.4.1 EN Pin
      2. 9.4.2 Negative Reference Voltage
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application: Basic Voltage Reference Connection
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Input and Output Capacitors
        2. 10.2.2.2 VIN Slew Rate Considerations
        3. 10.2.2.3 Shutdown/Enable Feature
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Receiving Notification of Documentation Updates
    3. 13.3 Community Resources
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

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Negative Reference Voltage

For applications requiring a negative and positive reference voltage, the REF4132 and OPA735 can be used to provide a dual-supply reference from a 5-V supply. Figure 19 shows the REF4132 used to provide a 2.5-V supply reference voltage. The low drift performance of the REF4132 complements the low offset voltage and zero drift of the OPA735 to provide an accurate solution for split-supply applications. Take care to match the temperature coefficients of R1 and R2.

REF4132 REF4132-REFV.gifFigure 19. REF4132 and OPA735 Create Positive and Negative Reference Voltages