LM4040BIX3-4.1

Overview

The LM4040BIX3-4.1 is a micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 4.096 V with an initial accuracy of 0.2%. The device operates within a temperature range of -40°C to +85°C and features a maximum temperature coefficient of 150 ppm/°C. It supports a maximum shunt current of 15 mA and is housed in an SOT-23-3 surface-mount package.

Feature Summary

• Provides stable reference voltage across industrial temperature ranges
• Ultra-low operating current suitable for power-constrained designs
• High precision accuracy for sensitive analog circuits

Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Handheld meters

Procurement Notes

Verify the manufacturer designation carefully, as the LM4040 series is produced by both Texas Instruments and Maxim Integrated. Confirm the specific suffix 'IX3' matches the required package and tolerance specifications from the official datasheet before procurement to ensure compatibility with existing designs.

Selection Notes

Select this component when a compact SOT-23-3 footprint is required alongside high precision. The 0.2% accuracy class offers tighter tolerances than standard versions. Ensure the design accounts for the 15 mA maximum shunt current limit during operation to maintain regulation stability.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The family includes various accuracy grades (A, B, C, D) and output voltages. The 'B' grade specifically denotes the 0.2% initial accuracy tier, distinguishing it from lower-cost variants while maintaining low power consumption characteristics.

Replacement Considerations

LM4040BIM3-4.1/NOPB is a documented equivalent from Texas Instruments offering similar electrical performance and pinout compatibility.