ADR291GR-REEL7

Overview

The ADR291GR-REEL7 is a low noise, micropower precision voltage reference utilizing XFET architecture. It provides a fixed 2.5 V output with an initial accuracy of ±0.24% and a maximum temperature coefficient of 25 ppm/°C. The device operates from a supply range of 2.8 V to 15 V with a typical quiescent current of 12 μA. It features low noise (8 μV p-p) and high output current capability of 5 mA. Packaged in an 8-lead SOIC, it functions within an extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Utilizes XFET architecture for low noise and ultralinear temperature drift
• Provides stable 2.5 V output with high accuracy grades
• Operates at micropower levels suitable for battery instrumentation
• Capable of sourcing up to 5 mA load current

Applications

• Portable instrumentation
• Precision reference for 3 V and 5 V systems
• Analog-to-digital and digital-to-analog converter reference
• Solar-powered applications
• Loop-current-powered instruments

Procurement Notes

Verify the specific suffix 'REEL7' indicates tape and reel packaging when ordering. Confirm the 'G' grade designation corresponds to the required ±0.24% accuracy and 25 ppm/°C temperature coefficient specifications. Ensure the 8-lead SOIC package option matches the target PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component for applications requiring low power consumption alongside high precision. The 2.5 V output is optimal for single-supply systems operating near 3 V. Consider the thermal resistance characteristics of the SOIC package if significant power dissipation is expected due to high input voltages or heavy load currents.

Part Context

This part belongs to the ADR291/ADR292 family of precision voltage references manufactured by Analog Devices. The series offers multiple output voltage options and electrical grades to accommodate varying precision requirements. It serves as a drop-in replacement for older REF02 and REF19x series devices while providing superior noise performance and lower power consumption.

Replacement Considerations

Pin-compatible with REF02 and REF19x series references.