REF02AU/2K5E4

Overview

The REF02AU/2K5E4 is a precision series voltage reference IC manufactured by Texas Instruments. It provides a fixed output voltage of 5 V with an initial accuracy of ±0.2%. The device operates within an input voltage range of 8 V to 40 V and draws a maximum supply current of 1.4 mA. It features a temperature coefficient of 15 ppm/°C and supports a maximum load current of 21 mA. The component is housed in an 8-SOIC surface-mount package and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Delivers a stable 5 V reference output with high initial accuracy
• Maintains low drift characteristics over varying temperatures
• Operates efficiently with minimal quiescent current consumption

Applications

• Precision analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) excitation circuits
• High-accuracy measurement instrumentation systems

Procurement Notes

Verify the specific suffix E4 for lead-free compliance status against current manufacturer documentation. Confirm the SOIC-8 package dimensions match your PCB footprint requirements. Ensure input voltage constraints remain within the specified 8 V to 40 V operational window during system design validation.

Selection Notes

Select this component when a fixed 5 V reference is required with tight initial tolerance specifications. Consider the 15 ppm/°C temperature coefficient for applications demanding stability across industrial temperature ranges. Verify that the 21 mA load capability meets the downstream circuit requirements without exceeding thermal limits.

Part Context

This part belongs to the REF02 series of precision voltage references from Texas Instruments. It serves as a specialized power management integrated circuit designed for applications requiring stable voltage standards. The device complements other precision components in signal conditioning chains where reference integrity is critical for overall system performance.

Replacement Considerations

Direct substitutes include REF02AU/2K5 and REF02BU/2K5. Alternative options may involve the REF200 series for different output configurations or the AD587KRZ from Analog Devices for comparable precision specifications.