ADR292GRUZ

Overview

The ADR292GRUZ is a low noise, micropower precision voltage reference from Analog Devices utilizing XFET architecture. It provides a fixed output of 4.096 V with an initial accuracy of ±0.24% and a maximum temperature coefficient of 25 ppm/°C. The device operates within a supply range of 4.4 V to 15 V and draws a typical quiescent current of 18 μA at extended temperatures. It features a low noise output of 12 μV p-p (0.1 Hz to 10 Hz) and can source up to 5 mA of load current. The component is housed in an 8-lead TSSOP package and functions over an operating temperature range of −40°C to +125°C.

Feature Summary

• Utilizes XFET architecture for low noise and ultralinear temperature drift
• Capable of sourcing high load currents up to 5 mA
• Designed for battery-powered applications with minimal quiescent current consumption
• Pin-compatible with REF02 and REF19x series references

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 electrical grade required for your application, as the ADR292 family offers varying levels of initial accuracy and temperature coefficients. Confirm that the system supply voltage meets the minimum requirement of 4.4 V for proper operation. Ensure the PCB layout accommodates the 8-lead TSSOP footprint and allows for adequate thermal dissipation if operating near maximum junction temperature limits.

Selection Notes

Select the ADR292GRUZ when a stable 4.096 V reference is needed with moderate accuracy requirements. This part is suitable for designs where power consumption must be minimized but higher load current capability than standard micro-power references is necessary. Consider the G-grade specifications regarding line and load regulation if the input voltage or load current varies significantly during operation.

Part Context

The ADR292GRUZ belongs to the ADR291/ADR292 family of precision voltage references. While the ADR291 provides a 2.5 V output, the ADR292 variant delivers 4.096 V. Both share the same XFET technology and pinout configurations across SOIC, TSSOP, and TO-92 packages. This family serves as a modern replacement for older bandgap and buried Zener references, offering superior noise performance and stability.

Replacement Considerations

The datasheet indicates pin compatibility with REF02 and REF19x series devices. Designers replacing these legacy components should verify that the new supply voltage range and thermal characteristics align with the existing circuit design constraints.