LM4040DEX3-5.0

Overview

The LM4040DEX3-5.0 is a micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed 5 V output with an initial accuracy of 1% and a maximum temperature coefficient of 150 ppm/°C. The device operates within a temperature range of -40°C to +85°C and supports a maximum shunt current of 15 mA. It is housed in a compact SC-70-3 surface-mount package, designed for precision applications requiring stable voltage references.

Feature Summary

• Provides a stable 5 V reference voltage with high precision
• Operates efficiently at low quiescent currents
• Maintains performance across industrial temperature ranges

Applications

• Portable instrumentation circuits
• Battery-powered measurement systems
• Data acquisition reference sources

Procurement Notes

Verify the manufacturer designation as Analog Devices Inc./Maxim Integrated on official documentation. Confirm the specific suffix 'DEX3' corresponds to the SC-70-3 package and 1% accuracy grade. Ensure compliance with RoHS standards if required by your manufacturing process. Cross-reference the part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when a fixed 5 V reference with 1% initial accuracy is required in a small SC-70-3 footprint. It is suitable for designs needing low power consumption and stability over the -40°C to +85°C range. Consider the 150 ppm/°C temperature coefficient for thermal drift requirements. Compare against higher accuracy grades like the A or B variants if tighter tolerances are necessary.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The D suffix indicates a 1% initial accuracy grade, while the EX3 suffix typically denotes the SC-70-3 surface-mount package. The series offers various output voltages and accuracy levels to suit different precision requirements in compact electronic designs.