REF02BU/2K5E4

Overview

The REF02BU/2K5E4 is a fixed precision voltage reference integrated circuit manufactured by Texas Instruments. It provides a stable 5 V output with an initial accuracy of ±0.2%. The device operates within a wide supply 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 an output current of up to 21 mA. The component is housed in an 8-pin SOIC package and is rated for operation between -40°C and +85°C.

Feature Summary

• Provides a fixed 5 V precision reference output with high initial accuracy.
• Operates over a wide input supply voltage range from 8 V to 40 V.
• Features low temperature drift characteristics for stable performance across varying thermal conditions.

Applications

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

Procurement Notes

Verify the specific suffix 'E4' indicates lead-free compliance and RoHS status as per official documentation. Confirm the package type matches the required 8-SOIC footprint. Ensure the ordering quantity aligns with the specified reel or cut tape packaging options available from authorized distributors. Cross-reference the manufacturer part number against current datasheets to confirm active status and any recent design changes.

Selection Notes

Select this component when a fixed 5 V reference with ±0.2% accuracy is required. It is suitable for applications needing a wide input voltage range up to 40 V. Consider the 15 ppm/°C temperature coefficient for thermal stability requirements. Verify that the 21 mA output current capability meets the load demands of the target circuit design.

Part Context

This part belongs to the REF02 series of precision voltage references from Texas Instruments. It is designed to replace older discrete reference solutions in compact surface-mount designs. The device integrates bandgap reference technology to deliver stable performance without external trimming components, simplifying circuit layout and reducing bill of materials complexity.

Replacement Considerations

Direct substitutes include the REF02AU/2K5E4 and REF02BU variants. Verify pin compatibility and electrical specifications before substitution. Check for any differences in packaging or environmental ratings that may affect assembly processes.