REF3440TIDBVR

Overview

The REF3440TIDBVR is a precision series voltage reference from Texas Instruments, housed in an SOT-23-6 surface-mount package. It provides a fixed output voltage of 4.096 V with an initial accuracy of ±0.05%. The device operates within an input voltage range of 4.146 V to 12 V and draws a supply current of 72 µA. It features a low temperature coefficient of 6 ppm/°C and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Delivers high-precision fixed voltage output with tight initial tolerance
• Optimized for low-power applications through minimal supply current consumption
• Maintains stable performance across extended industrial temperature ranges

Applications

• High-resolution analog-to-digital converter (ADC) reference sources
• Precision data acquisition systems requiring stable voltage baselines
• Portable instrumentation powered by battery or limited supply rails

Procurement Notes

Verify the specific suffix 'TI' indicates industrial temperature grade compliance against your design requirements. Confirm the SOT-23-6 package dimensions match your PCB footprint constraints. Ensure input voltage remains above the minimum dropout threshold to maintain regulation. Check moisture sensitivity level handling procedures during assembly.

Selection Notes

Select this component when a compact form factor is required alongside high accuracy. The low quiescent current makes it suitable for battery-operated devices where power efficiency is critical. Compare noise specifications if ultra-low noise is required for sensitive signal chains. Verify that the 10 mA output drive capability meets the load requirements of your circuit.

Part Context

This part belongs to the REF34xx family of micropower voltage references designed for space-constrained applications. It complements other Texas Instruments precision analog components by providing a stable reference node. The SOT-23-6 packaging allows for automated surface-mount assembly, integrating easily into modern electronic manufacturing workflows.

Replacement Considerations

Check for direct pin-compatible alternatives within the same REF34xx series. Verify that substitute parts offer equivalent accuracy and temperature coefficients. Ensure replacement packages match the physical footprint to avoid PCB redesign.