ADR291

a FEATURES Voltage Options 2.048 V, 2.500 V and 4.096 V 2.7 V to 15 V Supply Range Supply Current 12 ␮ A max Initial Accuracy ؎2 mV max Temperature Coefficient 8 ppm/؇C max Low-Noise 6 ␮ V p-p (0.1 Hz–10 Hz) High Output Current 5 mA min Temperature Range ؊ 40؇C to ؉125؇C 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 GENERAL DESCRIPTION Low Noise Micropower Precision Voltage References ADR290/ADR291/ADR292 PIN CONFIGURATIONS 8-Lead Narrow Body SO (R Suffix) 1 VIN 2 8 7 TOP VIEW (Not to Scale) 6 VOUT 3 5 ADR29x GND 4 8-Lead TSSOP (RU Suffix) 1 VIN 2 8 7 TOP VIEW 3 (Not to Scale) 6 VOUT 5 ADR29x GND 4 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. The ADR29x family are series voltage references providing stable and accurate output voltages from supplies as low as 2.7 V. Output voltage options are 2.048 V, 2.5 V and 4.096 V for the ADR290, ADR291 and ADR292 respectively. Quiescent current is only 12 µA, making these dev...