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ADR433:  Ultralow Noise XFET® 3.0V Voltage Reference w/Current Sink and Source Capability

Product Details

The ADR43x series is a family of XFET voltage references featuring low noise, high accuracy, and low temperature drift performance. Using Analog Devices, Inc., patented temperature drift curvature correction and XFET (eXtra implanted junction FET) technology, voltage change vs. temperature nonlinearity in the ADR43x is minimized.

The XFET references operate at lower current (800 µA) and supply headroom (2 V) than buried Zener references. Buried Zener references require more than 5 V headroom for operations. The ADR43x XFET references are the only low noise solutions for 5 V systems.

The ADR43x 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 ADR43x is available in 8-lead MSOP and 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

    • Low noise (0.1 Hz to 10.0 Hz):
      3.5 µV p-p @ 2.5 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:
      ADR430: 4.1 V to 18 V
      ADR431: 4.5 V to 18 V
      ADR433: 5.0 V to 18 V
      ADR434: 6.1 V to 18 V
      ADR435: 7.0 V to 18 V
    • High output source and sink current:
      +30 mA and −20 mA
    • Wide temperature range: −40°C to +125°C

    Pin Configuration Diagram for ADR433


    Title Content Type File Type
    ADR430/ADR431/ADR433/ADR434/ADR435: Ultralow Noise XFET Voltage References with Current Sink and Source Capability Data Sheet (Rev L, 07/2014) (pdf, 1088 kB) Data Sheets PDF
    AN-713: The Effect of Long-Term Drift on Voltage References  (pdf, 237 kB) Application Notes PDF
    High Performance Electrocardiogram (ECG) Signal Conditioning Technical Articles HTML
    Low-Power Data Conversion Technology Enhances Portability
    (Electropages, 10/5/2006)
    Product Reviews HTML
    ICs for Programmable Logic Control and Distributed Control Systems  (pdf, 976 kB)
    Analog Devices leadership in industrial IC technology, with the development of the iCMOS™ and iPolar™ processes, has uniquely defined high voltage and low voltage integration to deliver smaller, higher performance, and more cost effective ICs for industrial systems.
    Overview PDF
    RAQs index Rarely Asked Questions HTML
    What do I need to know about selecting and using Voltage References? FAQs/RAQs HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    Voltage Reference Selection & Evaluation Wizard Design Calculators HTML

    Evaluation Kits & Symbols & Footprints

    Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

    SampleSample & Buy

    Price, packaging, availability

    ADR433 Model Options
    Model Package Pins Temp.
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    ADR433ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $4.13 $3.85 Y  Material Info PCN Purchase
    ADR433ARMZ-REEL7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $3.85 Y  Material Info PCN Purchase
    ADR433ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $3.18 $2.96 Y  Material Info PCN Purchase
    ADR433ARZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $2.96 Y  Material Info PCN Purchase
    ADR433BRZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $4.74 $4.41 Y  Material Info PCN Purchase
    ADR433BRZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $4.41 Y  Material Info PCN Purchase
    Price Table Help

    The USA 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. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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