LM4041EIM7-1.2/NOPB

Voltage Reference Overview

The LM4041EIM7-1.2/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.225 V with an initial accuracy of ±1% and a temperature coefficient of 150 ppm/°C. The device operates within a supply current range of 45 µA to 12 mA and functions reliably across an industrial temperature range of -40°C to +85°C. Packaged in a compact SC-70 (SOT-323) surface-mount format, it ensures stability with any capacitive load without requiring external components.

Voltage Reference Feature Summary

• Eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load
• Utilizes fuse and Zener-zap reverse breakdown voltage trim during wafer sort to ensure specified accuracy
• Features bandgap reference temperature drift curvature correction for stable performance over wide operating temperatures

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify that the ordering suffix matches the required package type and temperature grade. Confirm the specific accuracy class corresponds to the design requirements. Ensure the component is sourced from authorized distributors to guarantee authenticity. Check for RoHS compliance status if environmental regulations apply to the final assembly. Validate the pinout configuration against the target PCB footprint before integration.

Voltage Reference Selection Notes

Select this component when a low-cost, space-saving voltage reference is needed for portable devices. It is suitable for applications requiring a fixed 1.225 V reference with moderate precision. Consider the 45 µA minimum operating current for battery life calculations. Choose this part over adjustable versions if a fixed reference simplifies the circuit design. Evaluate the SC-70 package constraints regarding thermal dissipation and board space.

Voltage Reference Part Context

This part belongs to the LM4041-N family of precision micropower shunt voltage references. The family includes various accuracy grades and packages such as SOT-23 and TO-92. The 'E' designation indicates the industrial temperature range variant. The 'M7' suffix specifies the SC-70 surface-mount package. The 'NOPB' indicates a lead-free and RoHS-compliant product version.

Voltage Reference Replacement Considerations

LM4041CIM7-1.2/NOPB offers higher accuracy (±0.5%) and lower temperature drift (100 ppm/°C). LM4041BIM7-1.2/NOPB provides even tighter tolerance (±0.2%). LM4041DIM7-1.2/NOPB is available in the same package with similar characteristics. Verify pin compatibility and electrical specifications before substituting.