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  5. LT1031


Features and Benefits

  • Pin Compatible with LH0070 and AD581*
  • Ultra Low 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 is a precision 10V reference 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 pre-trimmed 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
  • Inertial Navigation Systems
  • Precision Scales
  • Portable Reference Standard

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Product Recommendations

LT1031 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.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
LT1031BCH Material Declaration Reliability Data 3-Lead TO-39
LT1031BMH Material Declaration Reliability Data 3-Lead TO-39
LT1031DCH Material Declaration Reliability Data 3-Lead TO-39
Wafer Fabrication Data R003 Reliability Data

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Sample & Buy

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Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

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