LM4041CIMX-1.2

Overview

The LM4041CIMX-1.2 is a micropower shunt voltage reference providing a stable 1.225 V output. It features an initial accuracy of ±0.5% at 25 °C and a maximum temperature coefficient of 150 ppm/°C. The device operates with a minimum current of 60 µA and a maximum cathode current of 12 mA. It is housed in the SOT-23 surface-mount package and supports an industrial operating temperature range from -40 °C to +85 °C.

Feature Summary

• Eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load
• Utilizes bandgap reference temperature drift curvature correction and low dynamic impedance for stable performance
• Available in sub-miniature packages suitable for space-critical applications

Applications

• Portable, battery-powered equipment
• Data acquisition systems
• Instrumentation and process control
• Energy management and metering

Procurement Notes

Verify that the specific suffix 'CIMX' corresponds to the intended package variant (SOT-23) and temperature grade (Industrial). Confirm the manufacturer origin, as National Semiconductor assets are managed by Texas Instruments. Ensure the ordering part number matches the required tolerance and packaging format for your production line.

Selection Notes

Select this component when a fixed 1.225 V reference is required in a compact form factor. It is suitable for designs where power consumption must be minimized due to its ultra-low operating current. Choose this part over adjustable versions if a precise, unchanging reference voltage is needed without external resistor dividers.

Part Context

This component belongs to the LM4041-N precision voltage reference family. It shares core architectural features with other variants in the series, such as the LM4041DIM3X, differing primarily in manufacturing lot, specific suffix designations, and potentially minor tolerance grades or packaging configurations defined by the original manufacturer's coding system.

Replacement Considerations

LM4041CIM3X-1.2/NOPB

FAQ

Does the LM4041CIMX-1.2 require an output capacitor?

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

What is the typical output noise level?

The typical output noise is 20 µVRMS measured between 10 Hz and 100 Hz.