GENERAL DESCRIPTION
The ADR440/ADR441/ADR443/ADR444/ADR4451 series is a family of XFET® voltage references featuring ultralow noise, high accuracy, and low temperature drift performance. Using Analog Devices, Inc., temperature drift curvature correction and extra implanted junction FET (XFET) technology, voltage change vs. temperature nonlinearity in the ADR440/ADR441/ADR443/ADR444/ADR445 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 (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

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