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