LM4040DEX3-5.0-T

Overview

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

Feature Summary

• Provides a stable 5 V reference voltage with 1% initial accuracy
• Operates reliably across industrial temperatures from -40°C to +85°C
• Designed for space-constrained designs using the SC-70-3 package

Applications

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

Procurement Notes

Verify the manufacturer designation as Analog Devices Inc./Maxim Integrated on official documentation. Confirm the specific suffix 'DEX3-5.0-T' matches the required 1% accuracy and 5 V output specifications. Ensure the SC-70-3 package type aligns with board layout requirements. Check for RoHS compliance status in the latest datasheet.

Selection Notes

Select this component when a low-cost, high-accuracy shunt reference is needed for 5 V systems. The 1% tolerance suits general-purpose applications where tighter tolerances are unnecessary. Consider the 150 ppm/°C temperature coefficient for environments with moderate thermal variations. The SC-70-3 package offers a small footprint suitable for dense PCB layouts.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The family includes variants with different accuracies (0.1%, 0.2%, 0.5%, 1%) and output voltages. The LM4040 series is known for its low operating current and stability under capacitive loads, making it a common choice for power management ICs and reference circuits.