ADR291WFRZ-RL

Overview

The ADR291WFRZ-RL is a low noise, micropower precision voltage reference providing a stable 2.5 V output. It utilizes an XFET architecture for superior performance over traditional band gap references. The device operates from a supply range of 2.8 V to 15 V with a maximum supply current of 15 μA. It features low noise of 8 μV p-p (0.1 Hz to 10 Hz) and high output current capability of 5 mA. The unit is qualified for automotive applications and operates within a temperature range of −40°C to +125°C.

Feature Summary

• Automotive qualification for reliable operation in vehicle environments
• XFET architecture delivering ultralinear temperature drift and excellent long-term stability
• Pin-compatible design allowing direct replacement for REF02 and REF19x series devices

Applications

• Automotive Li-Ion battery measurement systems
• Analog-to-digital converter reference sources
• Digital-to-analog converter reference sources

Procurement Notes

Verify the specific ordering suffix matches the required reel quantity configuration. Confirm RoHS compliance status as indicated by the Z suffix. Ensure the package option corresponds to the 8-Lead SOIC_N form factor. Cross-reference the initial accuracy grade against system requirements before finalizing procurement orders.

Selection Notes

Select this component when automotive qualification is mandatory alongside low power consumption. The 2.5 V output suits single-supply ADC/DAC interfaces requiring precise referencing. Consider the 15 ppm/°C temperature coefficient for wide thermal range applications. Evaluate the 5 mA output drive capability against load requirements to ensure adequate margin.

Part Context

This part belongs to the ADR291 family of micropower precision voltage references manufactured by Analog Devices. The W variant denotes specific manufacturing tolerances and automotive qualification standards. The FRZ-RL suffix indicates tape and reel packaging for automated assembly processes.

Replacement Considerations

ADR291WFRZ-R7