ADR293TRU-EP

Overview

The ADR293TRU-EP is a low noise, micropower precision voltage reference providing a stable 5.0 V output from a 6.0 V to 15 V supply range. It utilizes XFET architecture for superior performance over traditional band gap references. The device operates within a military temperature range of −55°C to +125°C with a maximum initial accuracy of 0.2% and a temperature coefficient of 30 ppm/°C. Quiescent current is typically 11 μA at 25°C, rising to 20 μA at 125°C. It features a typical voltage noise of 15 μV p-p (0.1 Hz to 10 Hz) and supports up to 5 mA load current.

Feature Summary

• Utilizes XFET architecture for significantly lower voltage noise and ultralinear temperature drift compared to standard band gap references.
• Designed for defense and aerospace applications under AQEC standards with controlled manufacturing baselines.
• Provides high output current capability of 5 mA while maintaining ultra-low quiescent power consumption.

Applications

• Portable instrumentation
• Precision reference for 5 V systems
• ADC and DAC reference
• Solar-powered applications

Procurement Notes

Verify the specific ordering suffix required for quantity needs, as the base model corresponds to a 96-unit reel while the -R7 variant indicates a 1,000-unit reel. Confirm RoHS compliance status if applicable, noting that the 'Z' suffix explicitly denotes RoHS compliant parts. Ensure the selected package option matches the 8-Lead TSSOP footprint requirements for the target PCB design.

Selection Notes

Select this component when military-grade reliability and extended temperature operation are mandatory. The XFET technology offers distinct advantages in noise performance and long-term stability compared to conventional Zener or band gap alternatives. Consider the 5 mA output drive capability against system load requirements and verify that the 6.0 V minimum supply voltage aligns with the available power rails.

Part Context

This part belongs to the ADR29x series of precision voltage references manufactured by Analog Devices. It is specifically designated as an enhanced product (EP) variant, indicating qualification for rigorous environmental and reliability standards. The device shares pin compatibility with legacy REF02 and REF19x families, facilitating direct upgrades in existing designs requiring higher performance metrics.

Replacement Considerations

The datasheet notes pin-compatibility with the REF02 and REF19x series. Verify electrical parameter alignment before substitution, particularly regarding noise density and temperature coefficient specifications.

FAQ

What is the maximum operating temperature for the ADR293TRU-EP?

The device is specified for a military temperature range extending up to +125°C.

How does the XFET architecture benefit this voltage reference?

The XFET architecture provides one-quarter the voltage noise of band gap references at the same current, along with very low thermal hysteresis and excellent long-term stability.