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

6.6 Electrical Characteristics REF50xxEI

At TA = 25°C, ILOAD = 0, CL = 1μF and VIN = VEN = (VOUT + 0.25V) , unless otherwise noted
PARAMETER TEST CONDITION MIN TYP MAX UNIT
OUTPUT VOLTAGE
VOUT Output Voltage  REF5025E 2.5 V
REF5030E 3.0 V
REF5040E 4.096 V
REF5045E 4.5 V
REF5050E 5 V
IA Initial accuracy All voltage options  –0.025 0.025 %
dVOUT/dT TA = –40°C to 125°C  2.5 ppm/℃
NOISE
enpp Low Frequency noise ƒ = 0.1Hz to 10Hz  0.5 µVPP/V
en Output Voltage Noise ƒ = 10Hz to 1kHz  0.8 µVrms/V
LINE REGULATION
ΔVO(ΔVI) Line regulation VIN = (VOUT + 0.2V) to 42V 1 3 ppm/V
VIN = VOUT + 0.2V to 42V, TA = –40°C to 125°C  1 5
LOAD REGULATION

ΔVO(ΔIL)
 		 Load regulation
 		 –10mA < IOUT < 10mA, VIN = VOUT + 0.75V 5 25 ppm/mA
10mA < IOUT < 10mA, VIN = VOUT + 0.75V, TA = –40°C to 125°C 35
SHORT-CIRCUIT CURRENT
ISC Short circuit current VOUT = 0 21 mA
THERMAL HYSTERESIS AND LONG-TERM STABILITY
TH SOIC-8 Cycle 1 80 ppm
SOIC-8 Cycle 2 20 ppm
LONG-TERM STABILITY
ΔVOUT_LTD SOIC-8 0 to 1000 hours 25 ppm
1000 to 2000 hours 10 ppm
TEMP PIN
Voltage output 625 mV
Temperature sensitivity TA = -40°C to 125°C 2.64 mV/°C
TURN-ON SETTLING TIME
Turn-on settling time To 0.1% with CL = 1μF 400 μs
CAPACITIVE LOAD
CIN Stable input capacitor range –40℃ ≤ TA ≤ 125℃ 0.1 µF
CL Stable output capacitor range   –40℃ ≤ TA ≤ 125℃ 1 100 µF
POWER SUPPLY
VS Supply voltage See note  VOUT + 0.2  42 V
Quiescent current 340 μA
–40°C ≤ TA ≤ 125°C 480 μA
Quiescent current Shunt down current VEN = 0V 10 μA
Enable Voltage  VEN Active mode (EN = 1) 1.6 V
Shutdown Mode (EN = 0) 0.5 V
TEMPERATURE RANGE
Specified range –40 125 °C