SBOS410O June   2007  – October 2025 REF50 , REF50E

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 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 REF50xxI and REF50xxAI
    6. 6.6 Electrical Characteristics REF50xxEI
    7. 6.7 Typical Characteristics: REF50xxI, REF50xxAI
    8. 6.8 Typical Characteristics: REF50xxEI
  8. 7 Parameter Measurement Information
    1. 7.1 Solder Heat Shift
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Temperature Monitoring
      2. 8.3.2 Temperature Drift
      3. 8.3.3 Thermal Hysteresis
      4. 8.3.4 Noise Performance
      5. 8.3.5 Long-Term Stability
      6. 8.3.6 Output Adjustment Using the TRIM/NR Pin
    4. 8.4 Device Functional Modes
      1. 8.4.1 Basic Connections
      2. 8.4.2 Supply Voltage
      3. 8.4.3 Negative Reference Voltage
  10. 9 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 16-bit, 250KSPS Data Acquisition System
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curve
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
        1. 9.4.1.1 REF50xxI, REF50xxAI Layout Guidelines
        2. 9.4.1.2 REF50xxEI Layout Guidelines
      2. 9.4.2 Layout Example
      3. 9.4.3 Power Dissipation
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

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

6.7 Typical Characteristics: REF50xxI, REF50xxAI

At TA = 25°C, ILOAD = 0, and VS = VOUT + 0.2V, unless otherwise noted. For VOUT ≤ 2.5V, the minimum supply voltage is 2.7 V.

REF50 REF50E Temperature Drift
0°C to 85°C
Figure 6-1 Temperature Drift
REF50 REF50E Output Voltage Initial Accuracy
Figure 6-3 Output Voltage Initial Accuracy
REF50 REF50E Power-Supply Rejection Ratio vs Frequency
Figure 6-5 Power-Supply Rejection Ratio vs Frequency
REF50 REF50E REF5025 Output Voltage vs Load Current
Figure 6-7 REF5025 Output Voltage vs Load Current
REF50 REF50E Quiescent Current vs Temperature
Figure 6-9 Quiescent Current vs Temperature
REF50 REF50E Line Regulation vs Temperature
Figure 6-11 Line Regulation vs Temperature
REF50 REF50E 0.1Hz to 10Hz Noise
Figure 6-13 0.1Hz to 10Hz Noise
REF50 REF50E Start-Up
REF5025, CL = 1μF
Figure 6-15 Start-Up
REF50 REF50E Load Transient
CL = 1μF, IOUT = 1mA
Figure 6-17 Load Transient
REF50 REF50E Load Transient
CL = 10μF, IOUT = 1mA
Figure 6-19 Load Transient
REF50 REF50E Line Transient
CL = 1μF
Figure 6-21 Line Transient
REF50 REF50E REF50xx Long-Term Stability (First 1000 Hours)
VSSOP-8
Figure 6-23 REF50xx Long-Term Stability (First 1000 Hours)
REF50 REF50E REF50xx Long-Term Stability (First 2000 Hours)
VSSOP-8
Figure 6-25 REF50xx Long-Term Stability (First 2000 Hours)
REF50 REF50E REF50xx Long-Term Stability (4000 Hours)
VSSOP-8
Figure 6-27 REF50xx Long-Term Stability (4000 Hours)
REF50 REF50E REF50xx Long-Term Stability (Second 1000 Hours)
SOIC-8
Figure 6-29 REF50xx Long-Term Stability (Second 1000 Hours)
REF50 REF50E Temperature Drift
–40°C to 125°C
Figure 6-2 Temperature Drift
REF50 REF50E Output Voltage Accuracy vs Temperature
Figure 6-4 Output Voltage Accuracy vs Temperature
REF50 REF50E Dropout Voltage vs Load Current
Figure 6-6 Dropout Voltage vs Load Current
REF50 REF50E Temp Pin Output Voltage vs Temperature
Figure 6-8 Temp Pin Output Voltage vs Temperature
REF50 REF50E Quiescent Current vs Input Voltage
Figure 6-10 Quiescent Current vs Input Voltage
REF50 REF50E Short Circuit Current vs Temperature
Figure 6-12 Short Circuit Current vs Temperature
REF50 REF50E Noise Spectral Density
Figure 6-14 Noise Spectral Density
REF50 REF50E Start-Up
REF5025, CL = 10μF
Figure 6-16 Start-Up
REF50 REF50E Load Transient
CL = 1μF, IOUT = 10mA
Figure 6-18 Load Transient
REF50 REF50E Load Transient
CL = 10μF, IOUT = 10mA
Figure 6-20 Load Transient
REF50 REF50E Line Transient
CL = 10μF
Figure 6-22 Line Transient
REF50 REF50E REF50xx Long-Term Stability (Second 1000 Hours)
VSSOP-8
Figure 6-24 REF50xx Long-Term Stability (Second 1000 Hours)
REF50 REF50E REF50xx Long-Term Stability (Second 2000 Hours)
VSSOP-8
Figure 6-26 REF50xx Long-Term Stability (Second 2000 Hours)
REF50 REF50E REF50xx Long-Term Stability (First 1000 Hours)
SOIC-8
Figure 6-28 REF50xx Long-Term Stability (First 1000 Hours)
REF50 REF50E REF50xx Long-Term Stability (2000 Hours)
SOIC-8
Figure 6-30 REF50xx Long-Term Stability (2000 Hours)