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

6.5 Electrical Characteristics REF50xxI and REF50xxAI

At TA = 25°C, ILOAD = 0, CL = 1μF and VIN = (VOUT + 0.2V) to 18V, unless otherwise noted
PARAMETER TEST CONDITION MIN TYP MAX UNIT
OUTPUT VOLTAGE
VOUT Output Voltage  REF5020 (VOUT = 2.048V) (1), 2.7V < VIN < 18V 2.048 V
REF5025 2.5
REF5030 3.0
REF5040 4.096
REF5045 4.5
REF5050 5
REF5010 10
Initial Accuracy High Grade All voltage options (1) -0.05 0.05 %
Standard Grade All voltage options (1) –0.1 0.1 %
NOISE
enpp Low Frequency noise ƒ = 0.1Hz to 10Hz  3 µVPP/V
en Output Voltage Noise ƒ = 10Hz to 1kHz  0.9 µVrms/V
OUTPUT VOLTAGE TEMPERATURE DRIFT
dVOUT/dT High grade TA = –40°C to 125°C 2.5 3 pm/℃
Standard grade 3 8
LINE  REGULATION
ΔVO(ΔVI) Line regulation VIN = (VOUT + 0.2V) to 18V(1) 1 3 ppm/V
VIN = (VOUT + 0.2V) TO 18V, TA = –40°C to 125°C(1) 1 5
LOAD REGULATION

ΔVO(ΔIL)
 		 Load regulation –10mA < IOUT < 10mA, VIN = VOUT + 0.75V(2) 20 30 ppm/mA
10mA < IOUT < 10mA, VIN = VOUT + 0.75V(2), TA = –40°C to 125°C 50
SHORT-CIRCUIT CURRENT
ISC Short circuit current VOUT = 0 25 mA
THERMAL HYSTERESIS 
High grade VSSOP-8 Cycle 1 50 ppm
Cycle 2 40
SOIC-8 Cycle 1 70
Cycle 2 50
Standard grade
 		 VSSOP-8 Cycle 1 70
Cycle 2 40
SOIC-8 Cycle 1 90
Cycle 2 50
LONG-TERM STABILITY
ΔVOUT_LTD VSSOP-8 0 to 1000 hours 50 ppm
1000 to 2000 hours 25
SOIC-8 0 to 1000 hours 22
1000 to 2000 hours 18
TEMP PIN
Voltage output 575 mV
Temperature sensitivity TA = -40°C to 125°C 2.64 mV/℃
TURN-ON SETTLING TIME
Turn-on settling time To 0.1% with CL = 1μF 200 μs
POWER SUPPLY
VS Supply voltage See note (1) VOUT + 0.2  18 V
Quiescent current 0.8 1 mA
–40°C ≤ TA ≤ 125°C 1.2
TEMPERATURE RANGE
Specified range –40 125 °C
Operating range –55 125 °C
(1) For VOUT ≤ 2.5V, the minimum supply voltage is 2.7V.
(2) Except for REF5020, where VIN = 3V.