ADR293GR-REEL7

Overview

The ADR293GR-REEL7 is a low noise, micropower precision voltage reference providing a fixed 5.0 V output. It utilizes XFET architecture for superior performance over traditional band gap references. The device operates from a 6.0 V to 15 V supply with a maximum quiescent current of 15 μA. It delivers up to 5 mA of load current and features a typical noise of 15 μV p-p (0.1 Hz to 10 Hz). The G grade offers an initial accuracy of ±0.20% and a maximum temperature coefficient of 25 ppm/°C. It functions within an extended industrial temperature range of −40°C to +125°C.

Feature Summary

• XFET architecture provides ultralow noise and very low thermal hysteresis compared to standard band gap designs.
• Micropower consumption with a maximum supply current of 15 μA, suitable for battery-powered instrumentation.
• High output drive capability delivering up to 5 mA while maintaining high line and load regulation.
• Pin-compatible with REF02/REF19x series for simplified design upgrades.

Applications

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

Procurement Notes

Verify the specific suffix 'GRZ' indicates the G-grade electrical specifications and RoHS compliance. Confirm the '-REEL7' designation corresponds to the tape and reel packaging format required for automated assembly. Ensure the ordering quantity matches the manufacturer's standard reel size of 1,000 units. Cross-reference the datasheet revision to confirm pinout consistency with existing board layouts.

Selection Notes

Select this component when a stable 5 V reference is required with minimal power consumption. The G grade is appropriate for applications tolerating ±0.20% initial accuracy and 25 ppm/°C drift. Consider the SOIC-8 package for standard surface mount processes. Evaluate the 15 μA supply current against total system budget constraints. Verify that the 6.0 V minimum input voltage requirement aligns with the available supply rails.

Part Context

The ADR293 belongs to the ADR29x family of XFET precision voltage references manufactured by Analog Devices. This family includes variants with different output voltages such as 2.5 V (ADR291) and 4.096 V (ADR292). The technology replaces traditional buried Zener or band gap circuits to achieve lower noise and better long-term stability. The GRZ variant specifically denotes the G-grade performance level in an 8-lead SOIC package.

Replacement Considerations

Direct pin-compatible replacements include other members of the ADR29x family like the ADR292GRZ for 4.096 V outputs. Legacy REF02 or REF19x devices may fit physically but lack the low noise and micropower characteristics of the XFET architecture. Verify that any substitute maintains the 5 mA output current capability and operating temperature range.