SBAS798 September 2017 REF2125

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics
    6. 6.6Typical Characteristics
  7. Parameter Measurement Information
    1. 7.1Solder Heat Shift
    2. 7.2Long-Term Stability
    3. 7.3Thermal Hysteresis
    4. 7.4Power Dissipation
    5. 7.5Noise Performance
  8. Detailed Description
    1. 8.1Overview
    2. 8.2Functional Block Diagram
    3. 8.3Feature Description
      1. 8.3.1Supply Voltage
      2. 8.3.2Low Temperature Drift
      3. 8.3.3Load Current
      4. 8.3.4Clean Start Feature
    4. 8.4Device Functional Modes
      1. 8.4.1 EN Pin
      2. 8.4.2Negative Reference Voltage
  9. Applications and Implementation
    1. 9.1Application Information
    2. 9.2Typical Application: Basic Voltage Reference Connection
      1. 9.2.1Design Requirements
      2. 9.2.2Detailed Design Procedure
        1. 9.2.2.1Input and Output Capacitors
        2. 9.2.2.2VIN Slew Rate Considerations
        3. 9.2.2.3Shutdown/Enable Feature
      3. 9.2.3Application Curves
  10. 10Power-Supply Recommendations
  11. 11Layout
    1. 11.1Layout Guidelines
    2. 11.2Layout Example
  12. 12Device and Documentation Support
    1. 12.1Documentation Support
      1. 12.1.1Related Documentation
    2. 12.2Receiving Notification of Documentation Updates
    3. 12.3Community Resources
    4. 12.4Trademarks
    5. 12.5Electrostatic Discharge Caution
    6. 12.6Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Orderable Information

Features

  • Initial Accuracy: ±0.05% (maximum)
  • Temperature Coefficient : 6 ppm/°C (maximum)
  • Operating Temperature Range: −40°C to +125°C
  • Output Current: ±10 mA
  • Low Quiescent Current: 95 μA (maximum)
  • Wide Input Voltage: 12 V
  • Output 1/f Noise (0.1 Hz to 10 Hz): 5 µVPP/V
  • Excellent Long-Term Stability 30 ppm/1000 hrs
  • Small Footprint 5-Pin SOT-23 Package

Applications

  • Precision Data Acquisition Systems
  • Power Monitoring
  • PLC Analog I/O Modules
  • Industrial Instrumentation
  • Field Transmitters
  • Test Equipment
  • 4 - 20mA Loop sensors
  • LCR Meters

Description

The REF2125 device is a low temperature drift
(6 ppm/°C), low-power, high-precision CMOS voltage reference, featuring ±0.05% initial accuracy, low operating current with power consumption less than 95 μA. This device also offers very low output noise of 5 μVp-p /V, which enables its ability to maintain high signal integrity with high-resolution data converters and noise critical systems.

Stability and system reliability are further improved by the low output-voltage hysteresis of the device and low long-term output voltage drift. Furthermore, the small size and low operating current of the devices (95 μA) make them ideal for portable and battery-powered applications.

REF2125 is specified for the wide temperature range of −40°C to +125°C. Contact the TI sales representative for additional voltage options.

Device Information(1)

PART NAMEPACKAGEBODY SIZE (NOM)
REF2125SOT-23 (5)2.90 mm × 1.60 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Simplified Schematic

REF2125 REF21xx-simplified-schematic-sbas798.gif