REF3440IDBVR

Overview

The REF3440IDBVR is a precision series voltage reference IC manufactured by Texas Instruments. It provides a fixed output voltage of 4.096V with an initial accuracy tolerance of ±0.05%. The device operates within an input voltage range of 4.596V to 12V and draws a supply current of 95µA. It features a low temperature coefficient of 6ppm/°C and delivers an output current capability of 10mA. Noise performance is specified at 24µVrms for the 10Hz to 10kHz bandwidth and 15.2µVp-p for the 0.1Hz to 10Hz range. The component is housed in a compact SOT-23-6 surface-mount package and supports an extended operating temperature range from -40°C to +125°C.

Feature Summary

• Delivers high-precision fixed voltage output with tight initial accuracy tolerance
• Maintains stable reference levels across wide temperature variations via low drift characteristics
• Enables battery-powered designs through ultra-low quiescent current consumption
• Provides sufficient drive capability for direct interfacing with analog-to-digital converters

Applications

• Precision data acquisition systems requiring stable reference sources
• Industrial process control instrumentation
• Medical equipment signal conditioning circuits
• Portable test and measurement devices

Procurement Notes

Verify the specific suffix IDBVR corresponds to the industrial temperature grade and tape-and-reel packaging configuration required for your assembly line. Confirm that the 4.596V minimum input voltage aligns with your system's power rail headroom under all load conditions. Ensure compatibility with RoHS3 standards if mandated by your regional compliance requirements. Cross-reference the manufacturer part number against authorized distributor lists to guarantee authenticity and traceability.

Selection Notes

Select this component when a 4.096V reference is needed with superior long-term stability compared to shunt types. The series architecture offers better noise performance than many bandgap alternatives. Consider the SOT-23-6 footprint constraints during layout planning. Evaluate the 10mA output current limit against the total load current demands of your ADC or comparator stages to ensure adequate margin without excessive power dissipation.

Part Context

This device belongs to the REF34xx family of precision voltage references designed for high-performance applications. It complements other variants in the series offering different output voltages and automotive qualifications. The REF3440 specifically targets applications demanding low drift and low noise in a small form factor, serving as a critical reference element in mixed-signal circuits where accuracy is paramount.

Replacement Considerations

REF3440TIDBVR: Space-qualified version with identical electrical specifications but different environmental testing standards.