REF3440MDBVTEP

Overview

The REF3440MDBVTEP is a low-drift, low-power series voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 4.096 V with an initial accuracy of 0.05% and a temperature coefficient of 6 ppm/°C. The device operates within an input voltage range of 4.146 V to 12 V and supports a maximum output current of 10 mA. It features a typical quiescent current of 72 µA and operates across an extended industrial temperature range from -40°C to +125°C. Packaged in a compact SOT-23-6 footprint, it includes a shutdown function to minimize power consumption when inactive.

Feature Summary

• Provides high-precision 4.096 V output with 0.05% initial accuracy for demanding measurement applications
• Features ultra-low drift characteristics with a temperature coefficient of 6 ppm/°C over the full operating range
• Incorporates a dedicated shutdown pin to significantly reduce quiescent current during idle periods
• Delivers stable performance with low noise and wide input voltage compatibility in a small surface-mount package

Applications

• High-resolution data acquisition systems requiring precise analog references
• Industrial process control instrumentation and sensors
• Medical equipment and diagnostic devices needing stable voltage sources
• Portable battery-powered test and measurement instruments

Procurement Notes

Verify the specific suffix MDBVTEP against official Texas Instruments documentation to confirm the exact tape-and-reel packaging quantity and moisture sensitivity level. Ensure the ordering part number matches the required temperature grade and package variant. Cross-reference with the latest datasheet revision to validate any updates to electrical specifications or recommended operating conditions before finalizing procurement orders.

Selection Notes

Select this component when a fixed 4.096 V reference with high precision and low temperature drift is required. The SOT-23-6 package suits space-constrained designs. Consider the 10 mA output capability for driving moderate loads directly. Verify that the input voltage range aligns with the system supply rails. The shutdown feature makes it suitable for power-sensitive portable applications where standby current reduction is critical.

Part Context

This device belongs to the REF34xx family of low-drift series voltage references from Texas Instruments. It shares architectural similarities with other members like the REF3425 and REF3450, differing primarily in its fixed 4.096 V output setting. The family is designed for applications requiring superior stability compared to standard bandgap references, offering improved long-term stability and lower noise profiles in a compact form factor suitable for modern PCB layouts.

Replacement Considerations

Direct substitutes include REF3440IDBVR and REF3440MDBVT. Verify pinout compatibility and electrical parameter alignment, particularly output voltage tolerance and temperature coefficient, when replacing with these variants.