REF3425SQDBVRQ1

Overview

The REF3425SQDBVRQ1 is an automotive-grade series voltage reference from Texas Instruments, housed in a compact SOT-23-6 package. It delivers a fixed output of 2.5 V with high initial accuracy of ±0.05% and a low temperature coefficient of 6 ppm/°C. Designed for robust performance, it operates within a supply voltage range of 3.5 V to 12 V and supports a maximum shunt current of 10 mA. The device consumes only 95 µA of quiescent current and functions reliably across an extended temperature range from -40°C to +125°C. It holds AEC-Q100 qualification for automotive applications.

Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards
• High precision with ±0.05% initial accuracy and 6 ppm/°C temperature coefficient
• Low power consumption with 95 µA quiescent current draw
• Compact surface-mount SOT-23-6 packaging

Applications

• Automotive sensor signal conditioning circuits
• Data acquisition systems requiring stable reference voltages
• Precision analog-to-digital converter (ADC) references
• Battery management system monitoring

Procurement Notes

Verify the specific suffix QDBVRQ1 matches the required automotive grade and tape-and-reel packaging configuration. Confirm that the 2.5 V output variant aligns with circuit design requirements. Ensure compatibility with the SOT-23-6 footprint during PCB layout. Check for moisture sensitivity level compliance if storage conditions exceed specified limits. Validate supplier documentation against the official Texas Instruments datasheet for accurate part identification.

Selection Notes

Select this component when designing for automotive environments demanding high stability and low drift. The 6 ppm/°C coefficient ensures minimal output variation over wide temperature swings. The 10 mA load capability supports moderate current demands without external buffering. Consider the 95 µA quiescent current for battery-sensitive applications. The SOT-23-6 package offers space efficiency for dense board layouts compared to larger packages.

Part Context

This part belongs to the REF34xx family of precision series voltage references. The 'Q' prefix indicates automotive qualification, while 'S' denotes the SOT-23-6 package. The 'DBV' specifies the thermal pad variant, and 'RQ1' indicates reel packaging. This family provides a balance of precision, low power, and small form factor suitable for modern electronic designs.

Replacement Considerations

Direct substitutes include other AEC-Q100 qualified 2.5 V references in SOT-23-6 packages. Verify pinout compatibility and thermal characteristics before substitution. Alternative families may offer different accuracy or current capabilities but require circuit re-evaluation.