LM4041AEX3-1.2+T

Overview

The LM4041AEX3-1.2+T is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown voltage of 1.225V with an initial accuracy of 0.1% at +25°C and a maximum temperature coefficient of 100ppm/°C. The device operates within a wide current range of 60µA to 12mA and features low dynamic impedance. It is housed in a subminiature 3-pin SC70 surface-mount package and is guaranteed to function over the extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Ultra-small 3-pin SC70 surface-mount package for space-critical designs
• High precision with 0.1% initial accuracy and low temperature drift
• Capable of tolerating capacitive loads without external stabilizing capacitors
• Low output noise performance suitable for sensitive analog circuits

Applications

• Portable, battery-powered equipment
• Notebook computers
• Cell phones
• Industrial process controls

Procurement Notes

Verify that the ordering suffix 'E' confirms the extended temperature range (-40°C to +125°C) rather than the standard industrial range. Confirm the 'X3' designation corresponds to the SC70-3 package type. Ensure the '+T' suffix indicates lead-free/RoHS compliance as specified in the manufacturer's documentation before finalizing procurement specifications.

Selection Notes

Select this component when a high-precision 1.225V reference is required in a minimal footprint. The A-grade ensures tight initial accuracy limits. Verify that the application circuit maintains the shunt current between 60µA and 12mA to guarantee stable operation. Consider thermal derating if operating near the upper temperature limit due to the small package size.

Part Context

This part belongs to the LM4041 family of improved precision micropower shunt voltage references. It utilizes bandgap principles to achieve stability and is designed as a drop-in replacement for similar Zener-based references. The specific variant combines the highest accuracy grade with the smallest available package form factor and extended temperature capability.

Replacement Considerations

LM4041AIX3-1.2+T (Standard Industrial Temperature Range)

FAQ

Does the LM4041AEX3-1.2+T require an external capacitor for stability?

No, the device does not require an external stabilizing capacitor and is stable with any capacitive load.

What is the function of Pin 3 on the SC70-3 package?

Pin 3 is designated as N.C. (No Connect) and must be left floating or connected to Pin 2 (Anode).