SBOS471B April   2010  – June 2015 REF5020-EP , REF5025-EP , REF5040-EP , REF5050-EP

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 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: Per Device
    6. 6.6 Electrical Characteristics: All Devices
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Output Adjustment Using The TRIM/NR Pin
      2. 7.3.2 Low Temperature Drift
      3. 7.3.3 Temperature Monitoring
      4. 7.3.4 Noise Performance
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Negative Reference Voltage
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Positive Reference Voltage
        1. 8.2.2.1 Detailed Design Procedure
          1. 8.2.2.1.1 Load Capacitance
          2. 8.2.2.1.2 Bandgap Noise Reduction
    3. 8.3 System Example
      1. 8.3.1 Data Acquisition
  9. 9 Power Supply Recommendations
    1. 9.1 Basic Connections
    2. 9.2 Low Dropout Voltage
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Power Dissipation
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Related Links
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Low Temperature Drift:
    5 ppm/°C (Maximum)
  • High Accuracy:
    0.08% (Maximum)
  • Low Noise: 3 μVPP/V
  • High Output Current: ±10 mA
  • Available in Military (–55°C to 125°C) Temperature Range (1)
  • Extended Product Life Cycle
  • Extended Product-Change Notification
  • Product Traceability
(1) Custom temperature ranges available

2 Applications

  • 16-Bit Data Acquisition Systems
  • ATE Equipment
  • Industrial Process Control
  • Medical Instrumentation
  • Optical Control Systems
  • Precision Instrumentation
  • Controlled Baseline
  • One Assembly/Test Site
  • One Fabrication Site

3 Description

The REF50xx is a family of low-noise, very low-drift, very high precision voltage references. These references are capable of both sinking and sourcing, and are very robust with regard to line and load changes.

Excellent temperature drift and high accuracy are achieved using proprietary design techniques. These features, combined with very low noise, make the REF50xx family ideal for use in high-precision data acquisition systems.

They are offered in SOIC-8 packages, and are specified from –55°C to 125°C.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
REF50xx-EP SOIC (8) 4.90 mm × 3.91 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

REF5020-EP REF5025-EP REF5040-EP REF5050-EP fbd_bos471.gif