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