ADR445

Ultralow Noise, LDO XFET® 5.0V Voltage Reference w/Current Sink and Source
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Product Details

The ADR44x series is a family of XFET® voltage references featuring ultralow 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 ADR44x is greatly minimized.

The XFET references offer better noise performance than buried Zener references, and XFET references operate off low supply voltage headroom (0.5 V). This combination of features makes the ADR44x family ideally suited for precision signal conversion applications in high-end data acquisition systems, optical networks, and medical applications.

The ADR44x family has the capability to source up to 10 mA of output current and sink up to −5 mA. It also comes with a trim terminal to adjust the output voltage over a 0.5% range without compromising performance.

Offered in two electrical grades, the ADR44x family is avail-able in 8-lead MSOP and narrow SOIC packages. All versions are specified over the extended industrial temperature range of −40°C to +125°C.

Applications

  • Precision data acquisition systems
  • High resolution data converters
  • Battery-powered instrumentation
  • Portable medical instruments
  • Industrial process control systems
  • Precision instruments
  • Optical control circuits
  • Data Sheet, Rev. C, 3/08

    Product Lifecycle

    checked 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.

    Documentation

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    Reference Designs

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    CN0065 Circuit Diagram

    CN0233 Circuit Diagram

    CN0233 Photo

    CN0310 Circuit Diagram

    CN0310 Photo

    CN0200 Circuit Diagram

    CN0200 Photo

    CN0027 Circuit Diagram

    CN0028 Circuit Diagram

    CN0177 Circuit Diagram

    Design Resources

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    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.

    ADR445 Material Declaration
    PCN-PDN Information Quality And Reliability Symbols and Footprints

    Reviews

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    Overview

    5 Reviews
    5 out of 5 (100%) customers recommend this product.
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    Most Helpful Review

    by V. Rabochij
    For the project OCXO OSCILLATOR searched reference voltage 5V. The choice fell on ADR445A. The main parameters of the samples were significantly better ADR445A declared by the manufacturer.  Noise (0.1 Hz to 10 Hz) 1.8 μV p-p (declared 2.25 μV pp), Initial Accuracy(mV) +3 (declared ± 6) Temperature Coefficient (ppm / ° C) 5 (declared 10). Therefore, I believe ADR445A fully meets my requirements and is the best choice for price / quality.

    Most Recent Review

    by Kur@
    Precision current sourse for high resolution ADC Systems.

    All Reviews

    by Kur@, 10 Sep 14
    LOW NOISE Current Source
    Precision current sourse for high resolution ADC Systems.
    Was this Helpful?Helpful(0)
    by Noise measurement, 7 May 14
    ADR445 has ultralow noise for detector noise measurement
    ADR445 as a VOLTAGE REFERENCE has ultralow noise for detector noise measurement
    Was this Helpful?Helpful(0)
    by ndt_engineer, 10 Apr 14
    good references
    Good reference, worked perfectly. It would be nice to have a SOT23-3 option.
    Was this Helpful?Helpful(0)
    by Test and Meas, 12 Mar 14
    good low noise reference
    Good reference, worked perfectly. It would be nice to have it on SOT23 package
    Was this Helpful?Helpful(0)
    by V. Rabochij, 11 Oct 13
    The best choice for price / quality.
    For the project OCXO OSCILLATOR searched reference voltage 5V. The choice fell on ADR445A. The main parameters of the samples were significantly better ADR445A declared by the manufacturer.  Noise (0.1 Hz to 10 Hz) 1.8 μV p-p (declared 2.25 μV pp), Initial Accuracy(mV) +3 (declared ± 6) Temperature Coefficient (ppm / ° C) 5 (declared 10). Therefore, I believe ADR445A fully meets my requirements and is the best choice for price / quality.
    Was this Helpful?Helpful(0)

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    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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