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ADR441

PRODUCTION

Ultralow Noise, LDO XFET® 2.5V Voltage Reference w/Current Sink and Source

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Overview

  • Ultralow noise (0.1 Hz to 10 Hz)
    • ADR440: 1 μV p-p
    • ADR441: 1.2 μV p-p
    • ADR443: 1.4 μV p-p
    • ADR444: 1.8 μV p-p
    • ADR445: 2.25 μV p-p
  • Superb temperature coefficient
    • A Grade: 10 ppm/°C
    • B Grade: 3 ppm/°C
  • Low dropout operation (supply voltage headroom): 500 mV
  • Input range: (VOUT + 500 mV) to 18 V
  • High output source and sink current
    • +10 mA and −5 mA, respectively
  • Wide temperature range: −40°C to +125°C

ADR441-EP supports defense and aerospace applications (AQEC standard)

  • Download ADR441-EP Data Sheet (pdf)
  • Military temperature range (−55°C to +125°C)
  • Controlled manufacturing baseline
  • 1 assembly/test site
  • 1 fabrication site
  • Product change notification
  • Qualification data available on request
  • V62/18620 DSCC Drawing Number

The ADR440/ADR441/ADR443/ADR444/ADR445 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 ADR440/ADR441/ADR443/ADR444/ADR445 is greatly minimized.

The XFET references offer better noise performance than buried Zener references, and XFET references operate off low supply voltage headroom (500 mV). This combination of features makes the ADR440/ADR441/ADR443/ADR444/ADR445 family ideally suited for precision signal conversion applications in high-end data acquisition systems, optical networks, and medical applications.

The ADR440/ADR441/ADR443/ADR444/ADR445 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.

The ADR440/ADR441/ADR443/ADR444/ADR445 family is available in 8-lead MSOP and narrow SOIC packages and offered in two electrical grades. 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

ADR441
Ultralow Noise, LDO XFET® 2.5V Voltage Reference w/Current Sink and Source
ADR440-441-443-444-445 Functional Block Diagram ADR440-441-443-444-445 Functional Block Diagram ADR440-441-443-444-445-pc ADR440-441-443-444-445 Pin Configuration ADR441ACHIPS Functional Block Diagram ADR441ACHIPS Pin Configuration
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Hardware Ecosystem

Parts Product Life Cycle Description
LDO Linear Regulators 1
LT3040 RECOMMENDED FOR NEW DESIGNS 20V, 200mA, Ultralow Noise, Ultrahigh PSRR Precision DAC/Reference Buffer
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Reference Designs

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Features and Benefits

  • High speed photodiode signal conditioning circuit
  • 91dB dynamic range and circuit consumes only 40 mA
  • Dark current compensation
  • Spectral range from 400 nm to 1050 nm
  • Well suited for portable high speed applications
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