LM4040CEX3-5.0+

Overview

The LM4040CEX3-5.0+ is a micropower shunt voltage reference manufactured by Analog Devices Inc. under the Maxim Integrated brand. It provides a fixed output voltage of 5.0 V with an initial accuracy of 0.5%. The device operates within an industrial temperature range from -40°C to +125°C and features a maximum temperature coefficient of 150 ppm/°C. It utilizes a SC-70-3 surface-mount package and supports a maximum shunt current of 15 mA.

Feature Summary

• Provides stable 5.0 V reference output in compact SC-70-3 package
• Maintains precision across wide industrial temperature range
• Designed for low power consumption applications

Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Handheld meters

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific lot traceability requirements prior to procurement. Ensure packaging specifications match production line needs, as reel or cut tape options may vary by supplier. Cross-reference datasheet revisions to confirm parameter consistency.

Selection Notes

Select this component when a 5.0 V reference with 0.5% accuracy is required in space-constrained designs. The SC-70-3 package offers a small footprint suitable for dense PCB layouts. Consider the 150 ppm/°C temperature coefficient for thermal stability requirements. Verify that the 15 mA maximum shunt current aligns with the circuit's biasing constraints.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The 'C' suffix denotes 0.5% initial accuracy, while 'EX3' indicates the SC-70-3 package type. The '+T' suffix typically signifies tape and reel packaging. This series is designed for applications requiring high precision and low power consumption in industrial environments.

Replacement Considerations

Check for pin-compatible alternatives such as LM4040CEM3-5.0 or LM4040CIM3-5.0 if package differences are acceptable. Verify that substitute components meet the same 5.0 V output and 0.5% accuracy specifications. Ensure thermal performance and operating temperature ranges are compatible with the original design requirements.