REF3450SQDBVRQ1

Overview

The REF3450SQDBVRQ1 is an automotive-grade series voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 5 V with an initial accuracy of 0.05%. The device features a low temperature coefficient of 6 ppm/°C and supports a maximum input voltage of 12 V. It operates within a junction current limit of 10 mA and functions across a temperature range of -40°C to +125°C. Packaged in a compact SOT-23-5 surface-mount format, it is designed for space-constrained applications requiring high precision.

Feature Summary

• Automotive-grade reliability compliant with AEC-Q100 standards
• Low drift performance with 6 ppm/°C temperature coefficient
• High initial accuracy of 0.05% for precise measurement systems

Applications

• Automotive sensor signal conditioning
• Data acquisition systems in vehicles
• Precision analog-to-digital converter references

Procurement Notes

Verify the complete part number including suffixes to ensure correct package and tape/reel specifications. Confirm that the component meets specific automotive quality requirements for your application. Check datasheet revisions for any updates to electrical characteristics or recommended operating conditions before integration into final designs.

Selection Notes

Select this component when a stable 5 V reference is required in automotive environments. Consider the SOT-23-5 footprint for board space limitations. Ensure input voltage does not exceed 12 V. Evaluate thermal management needs given the 125°C maximum operating temperature rating for under-hood or harsh environment deployments.

Part Context

This device belongs to the REF34 family of precision voltage references from Texas Instruments. It shares architectural similarities with other REF34 variants but is distinguished by its fixed 5 V output and automotive qualification. The SQ suffix indicates automotive grade status, differentiating it from standard industrial counterparts.

Replacement Considerations

Direct substitutes include other REF34 series parts with compatible voltage outputs and packages. Verify pin compatibility and electrical parameters against the original design requirements before substitution.