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GENERAL DESCRIPTION

The ADR290, ADR291 and ADR292 are low noise, micropower precision voltage references that use an XFET? reference circuit. The new XFET architecture offers significant performance improvements over traditional bandgap and Zener-based references. Improvements include: one quarter the voltage noise output of bandgap references operating at the same current, very low and ultralinear temperature drift, low thermal hysteresis and excellent long-term stability.

FEATURES

Voltage Options 2.048 V, 2.500 V and 4.096 V

2.7 V to 15 V Supply Range

Supply Current 12 mA max

Initial Accuracy 62 mV max

Temperature Coefficient 8 ppm/8C max

Low-Noise 6 mV p-p (0.1 Hz–10 Hz)

High Output Current 5 mA min

Temperature Range 2408C to 11258C

REF02/REF19x Pinout

APPLICATIONS

Portable Instrumentation

Precision Reference for 3 V and 5 V Systems

A/D and D/A Converter Reference

Solar Powered Applications

Loop-Current Powered Instruments