LM4041AIM-1.2

Overview

The LM4041AIM-1.2 is a micropower shunt voltage reference manufactured by National Semiconductor, providing a stable fixed output of 1.225 V. It features an initial accuracy of ±0.1% at 25°C and operates within an industrial temperature range of -40°C to +85°C. The device draws a typical operating current of 40 µA at 25°C, with a maximum cathode current of 12 mA. It utilizes a bandgap reference design with curvature correction for low temperature drift and maintains stability across various capacitive loads without requiring external stabilization components.

Feature Summary

• Provides high precision with ±0.1% initial accuracy at 25°C
• Operates with ultra-low power consumption suitable for battery applications
• Ensures stability with any capacitive load without external capacitors
• Features temperature drift curvature correction for consistent performance

Applications

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

Procurement Notes

Verify the manufacturer designation as National Semiconductor or Texas Instruments, as TI acquired NS. Confirm the package type matches the specific suffix requirements for your PCB layout. Ensure the temperature grade corresponds to the industrial range specified for this part number before finalizing procurement orders.

Selection Notes

Select this component when space constraints require a small surface-mount package combined with high voltage accuracy. It is suitable for designs where minimizing quiescent current is critical for extending battery life. Consider the ±0.1% tolerance if tighter budget options are insufficient for the required measurement precision in the target application.

Part Context

This component belongs to the LM4041-N series of precision micropower shunt voltage references. The family includes adjustable versions and various accuracy grades (A, B, D) packaged in SC-70 and SOT-23 formats. The LM4041AIM-1.2 specifically denotes the fixed 1.225V output with the highest accuracy grade available in this line.

Replacement Considerations

• LM4041BIM-1.2/NOPB
• LM4041DIM-1.2/NOPB

FAQ

Does the LM4041AIM-1.2 require an external stabilizing capacitor?

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

What is the maximum operating current for this device?

The maximum operating current is 12 mA.