LM4041QEEM3-1.2/NO

Voltage Reference Overview

The LM4041QEEM3-1.2/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed nominal output of 1.225V. It operates within an extended industrial temperature range of -40°C to +125°C and holds AEC-Q100 qualification for automotive reliability. The device offers an initial accuracy of ±0.5% with a maximum temperature coefficient of 100ppm/°C. Designed for surface-mount applications in SOT-23 packages, it supports a wide operating current range from 60µA to 12mA without requiring external stabilizing capacitors.

Voltage Reference Feature Summary

• Automotive-grade reliability certified under the AEC-Q100 standard for robust performance in demanding environments
• Inherent stability across all capacitive loads eliminates the need for external output capacitors
• Advanced bandgap curvature correction ensures low dynamic impedance and stable reverse breakdown voltage

Voltage Reference Applications

• Automotive electronic systems requiring qualified precision references
• Portable battery-powered devices utilizing micropower shunt regulation
• Data acquisition systems needing stable analog-to-digital converter references

Voltage Reference Procurement Notes

Verify that the specific suffix 'QEEM3' corresponds to the Q-grade (extended temperature) variant with E-package dimensions. Confirm NOPB designation indicates lead-free compliance. Cross-reference datasheet electrical characteristics against application requirements to ensure compatibility with load currents and thermal constraints.

Voltage Reference Selection Notes

Select this component when automotive qualification and extended temperature operation are mandatory. The Q-grade provides superior thermal stability compared to standard grades. Ensure the fixed 1.225V output aligns with system voltage requirements, as adjustable versions require external resistors. Verify package availability matches PCB footprint constraints.

Voltage Reference Part Context

This part belongs to the LM4041-N family of precision shunt voltage references. The family includes various accuracy grades (A, B, C, D) and temperature ranges (Industrial, Extended). The QEEM3 designation specifically identifies the automotive-qualified, extended temperature version in the small SOT-23 package format.

Voltage Reference Replacement Considerations

LM4041CEM3-1.2/NOPB: Standard industrial grade, limited to 85°C. LM4041DEMM3-1.2/NOPB: Industrial grade, SOT-23 package. LM4041DIM3X-1.2/NOPB: Industrial grade, SC-70 package.