LM4041AIM3-1.2

Overview

The LM4041AIM3-1.2 is a precision micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed output voltage of 1.225 V. It provides an initial accuracy of ±0.1% at 25°C with a maximum temperature coefficient of 100 ppm/°C. The device operates within a wide current range from a minimum of 60 µA to a maximum of 12 mA and supports input voltages up to 15 V. Designed for industrial applications, it functions reliably across a temperature range of -40°C to +85°C. The component utilizes a SOT-23-3 surface-mount package and maintains stability with any capacitive load without requiring external compensation.

Feature Summary

• Provides high-precision fixed output voltage with minimal initial tolerance error
• Operates stably with any capacitive load without requiring external stabilizing capacitors
• Features low dynamic impedance and low output noise for signal integrity
• Designed for space-critical applications using sub-miniature surface-mount packaging

Applications

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

Procurement Notes

Verify the specific suffix 'AIM3' corresponds to the A-grade accuracy (±0.1%) and industrial temperature range (-40°C to +85°C). Confirm the package type is SOT-23-3. Ensure the part number includes the correct tape-and-reel designation if required for automated assembly. Cross-reference the manufacturer datasheet to confirm RoHS compliance status and lead-free material specifications before finalizing procurement orders.

Selection Notes

Select this component when a fixed 1.225 V reference with high initial accuracy is required in a compact form factor. It is suitable for designs needing stable performance across varying capacitive loads without external compensation components. Consider the 60 µA minimum operating current for low-power battery applications. Verify that the 15 V maximum input voltage meets the system supply requirements and that the industrial temperature range aligns with the environmental conditions.

Part Context

This device belongs to the LM4041-N series of precision micropower shunt voltage references. The series offers various accuracy grades and temperature ranges, utilizing bandgap reference technology with curvature correction. The LM4041 variant specifically provides a fixed 1.225 V output or adjustable options, distinguishing it from the LM4040 series which offers higher voltage fixed outputs like 2.5 V and 5.0 V.

Replacement Considerations

LM4041CIM3-1.2/NOPB: Offers ±0.5% accuracy and 150 ppm/°C tempco.

FAQ

Does the LM4041AIM3-1.2 require an external capacitor for stability?

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 voltage reference?

The minimum operating current is 60 µA for the LM4041-1.2 version.