LM4041DEM3X-1.2/NOPB

Overview

The LM4041DEM3X-1.2/NOPB is a micropower shunt voltage reference from Texas Instruments, providing a fixed output of 1.225 V with an initial accuracy of ±1% at 25°C. It operates within a temperature range of -40°C to +125°C and features a maximum temperature coefficient of 150 ppm/°C. The device draws a cathode current of 73 µA and supports a maximum shunt current of 12 mA. Packaged in a surface-mount SOT-23-3 (TO-236AB) case, it eliminates the need for external stabilizing capacitors while maintaining stability with any capacitive load.

Feature Summary

• Provides stable reverse breakdown voltage using bandgap reference curvature correction
• Ensures stability with any capacitive load without requiring external components
• Utilizes fuse and Zener-zap reverse breakdown trim during wafer sort for precision

Applications

• Space-critical applications requiring sub-miniature packaging
• Power restricted designs benefiting from ultra-low operating current
• Precision measurement systems requiring stable reference voltages

Procurement Notes

Verify the specific suffix 'DEM3X' indicates the standard commercial grade with ±1% accuracy, distinct from higher precision grades like 'AIM' or 'BIM'. Confirm the 'NOPB' designation ensures lead-free and RoHS compliance as per Texas Instruments standards. Ensure the ordering part number matches the required package type and temperature range specifications for your design constraints.

Selection Notes

Select this component when a fixed 1.225 V reference is required in a compact SOT-23-3 footprint. It is suitable for designs prioritizing low power consumption and space efficiency over ultra-high precision. Consider alternative grades if tighter tolerance than ±1% or lower temperature coefficients are necessary for the application requirements.

Part Context

This part belongs to the LM4041-N family of precision micropower shunt voltage references. The series offers various accuracy grades and packages, including SC-70 and SOT-23 options. The LM4041-N series is designed to simplify design efforts by removing the need for external stabilizing capacitors while ensuring stability across a wide range of operating conditions and capacitive loads.

Replacement Considerations

LM4041DIM3X-1.2/NOPB: Offers higher precision at ±0.1% accuracy in the same package. LM4041CIM3X-1.2/NOPB: Provides ±0.5% accuracy. LM4041DEM3-1.2/NOPB: Identical electrical specifications and package; verify if the 'X' suffix denotes tape-and-reel packaging preference.