ADR292FRZ

Overview

The ADR292FRZ is a low noise, micropower precision voltage reference providing a fixed output of 4.096 V. It utilizes XFET architecture for superior performance over traditional band gap references. The device operates with a supply range of 4.4 V to 15 V and draws a maximum supply current of 15 μA. Key electrical specifications include an initial accuracy of ±0.10% and a maximum temperature coefficient of 15 ppm/°C. It supports a high output current of 5 mA and features low noise of 12 μV p-p from 0.1 Hz to 10 Hz. The component is housed in an 8-lead SOIC package and functions within an extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Utilizes XFET architecture to achieve significantly lower voltage noise and thermal hysteresis compared to standard band gap references.
• Provides stable and accurate reference voltages with very low quiescent current consumption suitable for battery-powered applications.
• Features pin-compatible design with legacy REF02 and REF19x series devices for simplified circuit upgrades.

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 'FRZ' corresponds to the F grade (±0.10% accuracy, 15 ppm/°C) and the R-8 8-Lead SOIC package configuration. Confirm that the required operating voltage differential aligns with the minimum supply requirement of 4.4 V for the 4.096 V output variant. Ensure environmental compliance documentation matches project requirements.

Selection Notes

Select this component when a 4.096 V output is required with tight initial accuracy and low temperature drift. The F grade offers a balance between precision and cost. Consider the ADR292ERZ if higher accuracy (±0.07%) is needed, or the ADR292GRZ for relaxed tolerance requirements. Ensure the application supply voltage remains above 4.4 V to maintain regulation.

Part Context

The ADR292FRZ belongs to the ADR291/ADR292 family of micropower precision voltage references manufactured by Analog Devices. This series employs the proprietary XFET technology, which provides improved stability and lower noise characteristics compared to conventional reference circuits. The family includes variants with different output voltages, accuracies, and packaging options to suit diverse system requirements.

Replacement Considerations

The datasheet explicitly states the device is pin-compatible with REF02 and REF19x series references. Designers replacing these legacy components should verify that the new supply voltage range (minimum 4.4 V for ADR292) accommodates the existing circuit constraints.