LM4041DIM-1.2

Voltage Reference Overview

The LM4041DIM-1.2 is a precision micropower shunt voltage reference manufactured by National Semiconductor, now part of Texas Instruments. It provides a fixed output voltage of 1.225 V with an initial accuracy of ±0.1% at 25°C. The device operates within a wide current range from 60 µA to 12 mA and features a low temperature coefficient of 100 ppm/°C maximum. It is housed in a compact SOT-23 surface-mount package, designed for space-critical applications without requiring external stabilizing capacitors.

Voltage Reference Feature Summary

• Provides stable 1.225 V reference voltage with high initial accuracy
• Operates without external stabilizing capacitors across any capacitive load
• Features bandgap reference curvature correction for low temperature drift
• Utilizes fuse and Zener-zap reverse breakdown trim during wafer sort

Voltage Reference Applications

• Portable battery-powered equipment
• Data acquisition systems
• Precision audio components
• Process control instrumentation

Voltage Reference Procurement Notes

Verify the manufacturer designation as National Semiconductor or Texas Instruments, as the company was acquired. Confirm the specific suffix DIM indicates the SOT-23 package and -1.2 denotes the 1.225 V fixed output variant. Ensure compatibility with required operating temperature ranges and accuracy grades specified in the official datasheet before procurement.

Voltage Reference Selection Notes

Select this component for designs requiring ultra-low operating current and high precision in minimal footprint. The absence of external capacitor requirements simplifies layout. Consider the ±0.1% accuracy grade for critical measurement applications. Verify that the 12 mA maximum cathode current meets the circuit's load requirements while maintaining stability under varying capacitive loads.

Voltage Reference Part Context

This component belongs to the LM4041-N family of precision micropower shunt voltage references. It shares core architectural features with other variants in the series, such as adjustable versions and different accuracy grades. The device represents a transition period product where National Semiconductor branding may still appear on documentation prior to full integration into Texas Instruments' portfolio.

Voltage Reference Replacement Considerations

LM4041DEM3X-1.2/NOPB: Identical function and pinout in SOT-23 package with comparable electrical specifications.