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  5. ADR431


Features and Benefits

  • Low noise (0.1 Hz to 10.0 Hz): 3.5 μV p-p @ 2.500 V output
  • No external capacitor required
  • Low temperature coefficient
    • A Grade: 10 ppm/°C maximum
    • B Grade: 3 ppm/°C maximum
  • Load regulation: 15 ppm/mA
  • Line regulation: 20 ppm/V
  • Wide operating range
    • ADR431: 4.5 V to 18 V
  • High output source and sink current: 30 mA and −20 mA
  • Wide temperature range: −40°C to +125°C
    ADR431-EP supports defense and aerospace applications (AQEC standard)
    • Download ADR431-EP/ADR434-EP/ADR435-EP data sheet (pdf)
    • Military temperature range (−55°C to +125°C)
    • Controlled manufacturing baseline
    • One assembly/test site
    • One fabrication site
    • Enhanced product change notification
    • Qualification data available on request
    • V62/11602 DSCC Drawing Number

Product Details

The ADR430/ADR431/ADR433/ADR434/ADR435 series is a family of XFET® voltage references featuring low noise, high accuracy, and low temperature drift performance. Using Analog Devices, Inc., temperature drift curvature correction and extra implanted junction FET (XFET) technology, voltage change vs. temperature nonlinearity in the ADR430/ADR431/ADR433/ADR434/ ADR435 is minimized.

The XFET references operate at lower current (800 μA) and lower supply voltage headroom (2 V) than buried Zener references. Buried Zener references require more than 5 V of headroom for operation. The ADR430/ADR431/ADR433/ADR434/ADR435 XFET references are low noise solutions for 5 V systems.

The ADR430/ADR431/ADR433/ADR434/ADR435 family has the capability to source up to 30 mA of output current and sink up to −20 mA. It also comes with a trim terminal to adjust the output voltage over a ±0.5% range without compromising performance.

The ADR430/ADR431/ADR433/ADR434/ADR435 are available in 8-lead MSOP and 8-lead narrow SOIC packages. All versions are specified over the extended industrial temperature range of −40°C to +125°C.


  • Precision data acquisition systems
  • High resolution data converters
  • Medical instruments
  • Industrial process control systems
  • Optical control circuits
  • Precision instruments

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.

Reference Designs (1)

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
ADR431ARMZ Material Declaration Reliability Data 8-Lead MSOP
ADR431ARMZ-REEL7 Material Declaration Reliability Data 8-Lead MSOP
ADR431ARZ Material Declaration Reliability Data 8-Lead SOIC
ADR431ARZ-REEL7 Material Declaration Reliability Data 8-Lead SOIC
ADR431BRMZ Material Declaration Reliability Data 8-Lead MSOP
ADR431BRMZ-R7 Material Declaration Reliability Data 8-Lead MSOP
ADR431BRZ Material Declaration Reliability Data 8-Lead SOIC
ADR431BRZ-REEL7 Material Declaration Reliability Data 8-Lead SOIC
ADR431TRZ-EP Material Declaration Reliability Data 8-Lead SOIC
ADR431TRZ-EP-R7 Material Declaration Reliability Data 8-Lead SOIC
Wafer Fabrication Data

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Lead Times

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