ADR293FRZ

Overview

The ADR293FRZ is a low noise, micropower precision voltage reference providing a stable 5.0 V output. It utilizes XFET architecture for improved performance over traditional band gap references. The device operates with a supply range of 6.0 V to 15 V and draws a maximum supply current of 15 μA. It offers an initial accuracy of ±6 mV (0.12%) and a maximum temperature coefficient of 15 ppm/°C. The output can source up to 5 mA. It is specified over the extended industrial temperature range of −40°C to +125°C and is available in 8-lead SOIC packages.

Feature Summary

• Utilizes XFET architecture for low noise and ultralinear temperature drift
• Micropower consumption suitable for battery-powered instrumentation
• High output current capability of 5 mA
• Pin-compatible with REF02 and REF19x series

Applications

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

Procurement Notes

Verify the specific electrical grade required for the application, as the ADR293 family includes E, F, and G grades with varying accuracy and temperature coefficients. Confirm package availability, as the FRZ suffix indicates an 8-lead SOIC package. Ensure input voltage remains within the 6.0 V to 15 V operating range to maintain specified line regulation and stability characteristics during procurement planning.

Selection Notes

Select the ADR293FRZ when a 5.0 V reference with low noise and high precision is required. Consider the F-grade specifications for initial accuracy and temperature coefficient if tighter tolerances than the G-grade are needed. Evaluate thermal dissipation if operating at high ambient temperatures or with large input-output differentials. Verify compatibility with existing PCB footprints designed for REF02 or REF19x pinouts.

Part Context

The ADR293 is part of the ADR29x family of low noise, micropower precision voltage references from Analog Devices. This family includes variants with 2.5 V (ADR291) and 4.096 V (ADR292) outputs. All members share the same XFET-based architecture, offering similar power consumption and noise performance profiles while differing in output voltage and specific accuracy grades.

Replacement Considerations

The datasheet explicitly states the device is pin-compatible with the REF02 and REF19x series. Designers replacing legacy components should verify that the replacement meets the specific accuracy and temperature coefficient requirements of the original design, as these parameters vary across different manufacturers and sub-models.