LM4040AEX3-5.0-T

Overview

The LM4040AEX3-5.0-T is a micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 5 V with an initial accuracy of 0.1%. The device features a maximum temperature coefficient of 30 PPM/°C and supports a maximum shunt current of 15 mA. It operates within a temperature range of -40°C to +125°C. The component is housed in a compact SC-70-3 surface-mount package, designed for precision applications requiring low power consumption and high stability.

Feature Summary

• Provides stable 5 V reference voltage with 0.1% initial accuracy
• Low temperature coefficient of 30 PPM/°C for thermal stability
• Micropower operation suitable for battery-powered designs
• Compact SC-70-3 surface-mount package

Applications

• Portable instrumentation requiring precise voltage references
• Battery-operated measurement systems
• Data acquisition systems needing stable shunt references
• Industrial control circuits with strict accuracy requirements

Procurement Notes

Verify the exact part number suffix against official manufacturer documentation, as variations may exist between distributors. Confirm availability status directly with authorized suppliers, as supply constraints may apply. Ensure the component meets required RoHS compliance standards for your specific application region. Cross-reference datasheet revisions to confirm parameter consistency before procurement.

Selection Notes

Select this component when a 5 V shunt reference with 0.1% accuracy and 30 PPM/°C temperature coefficient is required. The SC-70-3 package is ideal for space-constrained PCB layouts. Consider the 15 mA maximum shunt current limit when designing biasing resistors. Verify that the -40°C to +125°C operating range covers the intended environmental conditions.

Part Context

This part belongs to the LM4040A series of improved precision micropower shunt voltage references from Maxim Integrated (now Analog Devices). The series offers various output voltages and accuracy grades, with the 'A' designation indicating 0.1% initial accuracy. The EX3 suffix typically denotes the SC-70-3 package variant.

Replacement Considerations

Check for direct substitutes within the LM4040 family with matching voltage and accuracy. Verify pinout compatibility if replacing with other SC-70-3 voltage references. Consult manufacturer cross-reference lists for approved alternatives.