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 5 V output with an initial accuracy of 0.5%. The device operates within a temperature range of -40 °C to +85 °C and features a maximum temperature coefficient of 150 ppm/°C. It supports a maximum shunt current of 15 mA and is housed in an SC-70-3 surface-mount package.

Feature Summary

• Provides stable 5 V reference voltage for precision applications
• Operates at ultra-low current consumption suitable for power-constrained designs
• Maintains stability across industrial temperature ranges

Applications

• Portable instrumentation requiring low power consumption
• Battery-powered measurement systems
• Data acquisition systems needing precise voltage references

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status and specific lot traceability before procurement. Ensure storage conditions meet moisture sensitivity level requirements to prevent package damage during soldering processes.

Selection Notes

Select this component when a 5 V shunt reference with 0.5% accuracy is required in a compact SC-70-3 package. Consider the 150 ppm/°C temperature coefficient for thermal stability needs. Verify that the 15 mA maximum shunt current aligns with circuit load requirements and that the -40 °C to +85 °C operating range suits the application environment.

Part Context

This part belongs to the LM4040 series of precision micropower shunt voltage references. The series offers various accuracy grades and output voltages, including 2.048 V, 2.5 V, 3.0 V, 4.096 V, and 5.0 V options. The LM4040CEX3-5.0 specifically denotes the 0.5% accuracy grade (C) in the SC-70-3 (EX3) package configuration.

Replacement Considerations

LM4040CEX3-5.0/NOPB is a direct equivalent from Texas Instruments. Other LM4040 variants with matching voltage and accuracy may serve as functional substitutes if package compatibility is addressed.