LM4040CEM3-5.0

Overview

The LM4040CEM3-5.0 is a fixed shunt precision voltage reference from Texas Instruments, providing a nominal output of 5 V. It utilizes an SOT-23 surface-mount package with three pins and operates within a temperature range of -40°C to +85°C. The device features an initial accuracy of ±0.5% and a maximum temperature coefficient of 150 ppm/°C. Designed for micropower applications, it supports a maximum shunt current of 15 mA and exhibits a load regulation of 8 mV.

Feature Summary

• Provides stable fixed voltage reference via shunt topology
• Micropower operation suitable for space-constrained designs
• High precision performance with low temperature drift

Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement systems
• Data acquisition circuits

Procurement Notes

Verify the specific suffix 'CEM3' against the official datasheet to confirm the exact accuracy grade and temperature coefficient specifications. Ensure the ordering part number matches the required tolerance level for your design. Confirm RoHS compliance status as indicated in the manufacturer documentation before finalizing procurement.

Selection Notes

Select this component when a 5 V fixed reference is needed in a compact SOT-23 footprint. Consider the ±0.5% initial accuracy and 150 ppm/°C temperature coefficient against system requirements. Evaluate the 15 mA maximum shunt current capability to ensure adequate biasing margins are maintained during operation.

Part Context

This device belongs to the LM4040 series of micropower shunt voltage references. The family offers various output voltages and accuracy grades across different packages including SOT-23 and TO-92. The LM4040CEM3-5.0 specifically targets industrial applications requiring reliable precision in small form factors.

Replacement Considerations

Official documentation indicates that LM4040CEM3-5.0/NOPB serves as the alternate or direct replacement for this part number.