ADR291GRUZ-REEL7

Overview

The ADR291GRUZ-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 maximum quiescent current of 15 μA. It features low noise (8 μV p-p from 0.1 Hz to 10 Hz) and high output current capability up to 5 mA. Packaged in an 8-lead TSSOP, it functions within an extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Utilizes XFET architecture for significantly lower noise and thermal hysteresis compared to traditional band gap references.
• Provides stable 2.5 V output with high accuracy and ultralow temperature drift across the operating range.
• Designed for micropower applications with minimal quiescent current consumption suitable for battery operation.

Applications

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

Procurement Notes

Verify the specific suffix REEL7 indicates tape and reel packaging when sourcing. Confirm the GRUZ designation corresponds to the G grade (±0.24% accuracy, 25 ppm/°C TC) and TSSOP package. Ensure compatibility with the required supply voltage range of 2.8 V to 15 V for the ADR291 variant.

Selection Notes

Select this component for designs requiring low noise and low power in a compact surface-mount package. The G grade offers cost-effective precision for general-purpose applications where ±0.24% accuracy is sufficient. Consider the 8-lead TSSOP form factor for space-constrained PCB layouts.

Part Context

This part belongs to the ADR291/ADR292 family of XFET voltage references. The ADR291 specifically provides a 2.5 V output, while the ADR292 provides 4.096 V. The family shares similar electrical characteristics but differs in output voltage and minimum supply requirements.

Replacement Considerations

Pin-compatible with REF02 and REF19x series devices. Verify pinout alignment and thermal performance before substitution.