LM4041DIM3X-1.2

Voltage Reference Overview

The LM4041DIM3X-1.2 is a precision micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed output of 1.225 V. It operates within an extended temperature range of -40°C to +125°C and utilizes the SOT-23 (SC-70) surface-mount package. The device offers high initial accuracy with a maximum tolerance of ±0.1% at 25°C and a low temperature coefficient of 100 ppm/°C. It functions with a minimum operating current of 60 µA and supports a maximum cathode current of 12 mA. The design ensures stability with any capacitive load without requiring external stabilizing capacitors.

Voltage Reference Feature Summary

• Eliminates the need for external stabilizing capacitors while ensuring stability with any capacitive load
• Utilizes fuse and Zener-zap reverse breakdown trim during wafer sort for high precision
• Features bandgap reference temperature drift curvature correction for stable performance
• Provides low dynamic impedance and low noise characteristics

Voltage Reference Applications

• Space-critical applications utilizing sub-miniature packages
• Portable devices requiring low power consumption
• Battery-powered systems with strict current constraints
• Precision measurement equipment requiring stable references

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free and RoHS compliance status as per manufacturer documentation. Confirm the 'DIM3X' designation corresponds to the SOT-23 package variant and the '-1.2' specifies the 1.225V fixed output grade. Ensure the ordering part number matches the required accuracy grade (A-grade ±0.1%) and temperature range (-40°C to +125°C) specified in the official datasheet before procurement.

Voltage Reference Selection Notes

Select this component when space-saving is critical due to its SOT-23 packaging. It is suitable for designs requiring high precision (±0.1%) and low quiescent current (60 µA). Consider the extended temperature range capability for harsh environments. Verify that the application does not require adjustable voltage outputs, as this model provides a fixed 1.225V reference. Ensure the circuit can handle the maximum 12 mA shunt current if used in low-impedance paths.

Voltage Reference Part Context

This device belongs to the LM4041-N family of precision micropower shunt voltage references from Texas Instruments. The family includes both fixed and adjustable versions available in SC-70 and SOT-23 packages. The LM4041-N series is designed to replace larger through-hole references in modern compact electronics, offering improved accuracy and lower power consumption compared to standard zener diodes.

Voltage Reference Replacement Considerations

LM4041DEM3X-1.2/NOPB: Same family member with potentially different accuracy grade or packaging variant; verify electrical parameters match requirements.