LM4041EEM3-1.2

Voltage Reference Overview

The LM4041EEM3-1.2 is a micropower shunt voltage reference from Texas Instruments, providing a fixed output of 1.225 V. It features an initial accuracy of ±0.2% at 25 °C and a maximum temperature coefficient of 100 ppm/°C. The device operates within a wide current range of 45 µA to 12 mA and maintains stability with any capacitive load without requiring external compensation. It is housed in the SOT-23 package and supports an extended industrial operating temperature range from -40 °C to +125 °C.

Voltage Reference Feature Summary

• Provides stable 1.225 V reference voltage with high precision
• Operates stably with any capacitive load without external capacitors
• Ultra-low operating current suitable for power-constrained designs
• Available in space-saving surface-mount packages

Voltage Reference Applications

• Portable battery-powered equipment
• Handheld instruments
• Data acquisition systems
• Microprocessor supervisory circuits

Voltage Reference Procurement Notes

Verify the specific suffix 'EEM3' against official datasheets to confirm the exact grade (B-grade) and packaging configuration. Ensure the required operating temperature range aligns with the extended specifications (-40°C to +125°C). Confirm RoHS compliance status and check for lead-free manufacturing details prior to ordering.

Voltage Reference Selection Notes

Select this component when a fixed 1.225 V reference is required in compact designs. It is ideal for applications demanding low quiescent current and high stability across varying loads. Consider the B-grade tolerance if tighter accuracy than C or D grades is needed but A-grade cost is prohibitive.

Voltage Reference Part Context

This part belongs to the LM4041-N family of precision micropower shunt voltage references. The series offers various accuracy grades and output voltages, designed for applications where space and power consumption are critical constraints. It serves as a drop-in replacement for older Zener-based references in many low-voltage applications.

Voltage Reference Replacement Considerations

LM4041DEM3-1.2/NOPB: Different accuracy grade (D-grade vs B-grade).

Voltage Reference FAQ

Does the LM4041EEM3-1.2 require an output capacitor?

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

What is the minimum operating current for this device?

The typical minimum operating current is 45 µA.