Alternative Parts


Features and Benefits

  • Pin Compatible with LH0070 and AD581
  • Ultralow Drift—5ppm/°C Max Slope
  • Trimmed Output Voltage
  • Operates in Series or Shunt Mode
  • Output Sinks and Sources in Series Mode
  • Very Low Noise < 1ppmP-P 0.1Hz to 10Hz
  • > 100dB Ripple Rejection
  • Minimum Input Voltage of 11V

Product Details

The LT1031/LT0070 are precision 10V references with ultralow drift and noise, extremely good long term stability, and almost total immunity to input voltage variations. The reference output will both source and sink up to 10mA and can be used as a shunt regulator (two terminal Zener) with the same precision characteristics as the three terminal connection. Special care has been taken to minimize thermal regulation effects and temperature induced hysteresis.

The LT1031 reference is based on a buried Zener diode structure which eliminates noise and stability problems associated with surface breakdown devices. Further, a subsurface Zener exhibits better temperature drift and time stability than even the best band-gap references.

Unique circuit design makes the LT1031 the first three terminal IC reference to offer ultralow drift without the use of high power on-chip heaters. Output voltage is pretrimmed to 0.05% accuracy.

The LT1031 can be used as a plug-in replacement for the AD581 and LH0070*, with improved electrical and thermal performance.


  • A-to-D and D-to-A Converters
  • Precision Regulators
  • Digital Voltmeters
  • lnertial Navigation Systems
  • Precision Scales
  • Portable Reference Standard

Product Lifecycle icon-not-recommended Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.

Product Recommendations

LH0070 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

Sample & Buy

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