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ADR434:  Ultralow Noise XFET® 4.096V 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.

The ADR434-EP Supports defense and aerospace applications (AQEC standard)

  • 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
  • See data sheet for additional features

ADR434-EP Supports defense and aerospace applications (AQEC)

  • Download ADR434-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

Pin Configuration Diagram for ADR434


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
ADR431-EP/ADR434-EP/ADR435-EP: Low Noise XFET Voltage References with Current Sink and Source Capability (Rev A, 08/2010) (pdf, 145 kB) Data Sheets PDF
ADR431/ADR434/ADR435-DSCC: Microcircuit, Linear, Low Noise, Voltage Reference, Monolithic Silicon Military Data Sheet (Rev A, 12/2010) (pdf) Data Sheets PDF
AN-713: The Effect of Long-Term Drift on Voltage References  (pdf, 237 kB) Application Notes PDF
CN0201: Complete 5 V, Single-Supply, 8-Channel Multiplexed Data Acquisition System with PGIA for Industrial Signal Levels  (pdf, 263 kB) Circuit Note PDF
A 16-Bit, 6 MSPS SAR ADC System with Low Power Input Drivers and Reference Optimized for Multiplexed Applications  (pdf, 457 kB) Circuit Note PDF
CN-0080: High Speed, Precision, Differential AC-Coupled Drive Circuit for 16-Bit, 6 MSPS AD7625 PulSAR ADC  (pdf, 214 kB) Circuit Note PDF
UG-444: Evaluating the AD5750 Industrial Current/Voltage Output Driver  (pdf, 399 kB) User Guides 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
What do I need to know about selecting and using Voltage References? FAQs/RAQs HTML
RAQs index Rarely Asked Questions 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.

Product Recommendations & Reference Designs

Engineered. Tested. Ready to Integrate.
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Price, packaging, availability

ADR434 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADR434ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $4.13 $3.85 Y  Material Info PCN Purchase
ADR434ARMZ-REEL7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $3.85 Y  Material Info PCN Purchase
ADR434ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $4.13 $3.85 Y  Material Info PCN Purchase Sample
ADR434ARZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $3.85 Y  Material Info PCN Purchase
ADR434BRZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $4.74 $4.41 Y  Material Info PCN Purchase
ADR434BRZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $4.41 Y  Material Info PCN Purchase
ADR434TRZ-EP Status: Production 8 ld SOIC 8 Mil Tube, 98 $7.11 $6.62 Y  Material Info Notify Me Purchase
ADR434TRZ-EP-R7 Status: Production 8 ld SOIC 8 Mil Reel, 1000 - $6.62 Y  Material Info Notify Me 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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