Voltage References

Broad Series and Shunt Voltage Reference Portfolio

As the premier volume supplier of voltage references, TI has more than 40 years of supply history, starting with the LM100 through industry pacesetters like the LM431, LM385, and LM336. TI's portfolio of voltage references feature low temperature coefficient, precise initial accuracy, low noise, and excellent long term stability performance. Both series and shunt references support a wide variety of applications, including high-precision references for data converters up to 20-bit precision accuracy and low-noise references for sensor conditioning. Voltage references are also commonly used as voltage monitors, current limiters, and programmable current sources.

Voltage Reference Parametric Tables

Featured Voltage References

  • Automotive
    • LM4050Q – Automotive AEC-Q100 Grade 1 Precision Micropower Shunt Voltage Reference

 

  • Highest Precision
    • REF50xx - Low Noise, Very Low Drift, Precision Voltage References
  • Lowest Noise
    • LM4140 - Precision Micropower Low Dropout Voltage Reference
  • Ultra Low Power
    • REF33xx - 3.9uA, 30ppm/C Drift, SOT23-3, SC70-3 Voltage References



Series & Shunt Voltage Reference Comparison

Parameter Series References Shunt References
Block Diagram

Series Reference Block Diagram

Shunt Reference Block Diagram

Number of Terminals At least 3 At least 2
Advantages
  • Significantly lower power dissipation
  • Lower component count
  • Generally higher precision
  • No limit on maximum VIN
  • VREF not changing over VIN
  • Can be used to create negative or floating reference voltages
Parametric Tables
Selection Tool
  • Voltage Reference Selection Tool (interactive PDF)
    • Helps you select the right voltage reference
    • Provides portfolio overviews for both series and shunt references
    • Selection graphs by initial accuracy, temperature drift, package size, current consumption, noise, and cost
    • Includes important design parameters and tips

 

Common Voltage Reference Applications

  • Precision data converter voltage references
    • Data acquisition systems
    • Test & measurement
    • Industrial process control
    • Medical equipment
    • Precision scales
  • Sensing & detection systems
    • Sensor systems
    • Thermocouples
    • Thermopiles
    • pH sensors
  • Voltage monitors
  • Current Limiters
  • Current sources





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