GENERAL DESCRIPTION
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.

FEATURES
   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: 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

APPLICATIONS
   Precision data acquisition systems
   High resolution data converters
   Battery-powered instrumentation
   Portable medical instruments
   Industrial process control systems
   Precision instruments
   Optical control circuits