REF3430SQDBVRQ1

Overview

The REF3430SQDBVRQ1 is an automotive-grade series voltage reference from Texas Instruments, housed in a SOT-23-5 package. It provides a fixed output of 3 V with an initial accuracy of 0.05%. The device features a low temperature coefficient of 6 PPM/C and supports input voltages up to 12 V. It operates within a junction temperature range of -40°C to +125°C and draws a maximum shunt current of 10 mA.

Feature Summary

• Automotive qualification compliant for high-reliability applications
• Low-drift performance ensures stable reference voltage over temperature
• Compact surface-mount packaging facilitates space-constrained designs

Applications

• Automotive sensor signal conditioning
• Data acquisition systems requiring precise voltage references
• Analog-to-digital converter (ADC) reference inputs

Procurement Notes

Verify the specific suffix 'SQ' against the manufacturer's official documentation to confirm it denotes the correct automotive grade and package variant. Ensure the ordering part number matches the exact pinout and electrical specifications required for the target application design.

Selection Notes

Select this component when a fixed 3 V reference with high precision is needed in automotive environments. Consider the 6 PPM/C drift and 0.05% initial accuracy if tight tolerance is critical. Verify that the 12 V maximum input voltage and 10 mA load capability align with the system power budget.

Part Context

This part belongs to the REF34xx family of precision voltage references designed for automotive use. It shares the series architecture with other variants in the lineup but is specifically configured for a 3 V output. The Q1 designation indicates compliance with automotive quality standards.

Replacement Considerations

Check for REF3430QDBVRQ1 as a potential alternative, ensuring the package and grade match requirements.