LM4041EEM3X-1.2

Voltage Reference Overview

The LM4041EEM3X-1.2 is a precision micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed output of 1.225 V. It utilizes an advanced design that ensures stability with any capacitive load without requiring an external stabilizing capacitor. The device operates within a temperature range of -40°C to +85°C and is housed in a sub-miniature SOT-23 surface-mount package. Key electrical characteristics include a maximum initial accuracy of ±0.5% and a typical low output noise of 20μVRMS. It supports a wide operating current range from a minimum of 45μA to a maximum of 12mA.

Voltage Reference Feature Summary

• Stable operation with any capacitive load without the need for external stabilizing capacitors
• Low dynamic impedance and low temperature coefficient ensure stable reverse breakdown voltage accuracy
• Sub-miniature SOT-23 package designed for space-critical applications
• Micropower consumption suitable for battery-operated devices

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix 'EEM3X' against official Texas Instruments documentation to confirm the exact grade (C-grade) and tape-and-reel packaging configuration. Ensure the component matches the required industrial temperature range (-40°C to +85°C) and pinout compatibility for your PCB layout. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Voltage Reference Selection Notes

Select this component when a fixed 1.225V reference is required in a compact SOT-23 footprint. It is appropriate for designs needing stability with capacitive loads without additional compensation components. Consider the ±0.5% accuracy and 150ppm/°C temperature coefficient if higher precision grades like A or B are not necessary for the application's performance requirements.

Voltage Reference Part Context

This part belongs to the LM4041-N family of precision micropower shunt voltage references. The family offers various accuracy grades and output voltages, including adjustable versions. The LM4041 series is characterized by its ability to operate with minimal quiescent current and its robustness against capacitive loading, making it a versatile choice for general-purpose voltage referencing in portable electronics.

Voltage Reference Replacement Considerations

LM4041CIM3X-1.2/NOPB: Offers similar functionality but may differ in accuracy grade or temperature rating.

Voltage Reference FAQ

Does the LM4041EEM3X-1.2 require an external capacitor for stability?

No, the advanced design of the LM4041-N eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load.

What is the minimum operating current for this device?

The minimum operating current is typically 45μA for the LM4041-N series.