SBAS798 September   2017 REF2125

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

Package Options

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

1 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

2 Applications

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

3 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 NAME PACKAGE BODY SIZE (NOM)
REF2125 SOT-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