LM4040DEM3-5.0-T

Overview

The LM4040DEM3-5.0-T is a micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated, designed for precision applications requiring stable output voltages in compact surface-mount configurations. This specific variant provides a fixed 5.0 V output with an initial accuracy of 1% and a maximum temperature coefficient of 150 ppm/°C. It operates within an industrial temperature range from -40°C to +85°C and supports a maximum shunt current of 15 mA. The device is housed in a SC-70-3 package, facilitating space-efficient PCB layouts while maintaining high stability under varying load conditions.

Feature Summary

• Provides a fixed 5.0 V reference output with 1% initial accuracy
• Operates as a micropower shunt reference suitable for low-current designs
• Maintains stability across the industrial temperature range of -40°C to +85°C
• Utilizes a compact SC-70-3 surface-mount package

Applications

• Portable instrumentation circuits requiring precise voltage references
• Battery-powered systems where low quiescent current is critical
• Data acquisition systems needing stable analog-to-digital converter references
• Industrial control loops utilizing shunt regulation topologies

Procurement Notes

Verify the manufacturer designation carefully, as the LM4040 series is produced by multiple vendors including Texas Instruments and Microchip. Confirm that the specific suffix corresponds to the SC-70-3 package and 1% accuracy grade. Ensure compatibility with existing footprint designs, as package dimensions may vary slightly between manufacturers despite identical pinouts.

Selection Notes

Select this component when a 5.0 V reference with 1% tolerance is required in a minimal footprint. Consider the 150 ppm/°C temperature coefficient against application thermal stability needs. Compare operating current specifications with other series variants if power consumption is a primary constraint. Verify that the shunt current capability meets the minimum bias requirements of the connected circuitry.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references, which offers various accuracy grades and output voltages. The DEM3 suffix typically denotes the 1% accuracy version in the SC-70-3 package. The series is widely used in industrial and consumer electronics for providing stable reference points in measurement and control applications.

Replacement Considerations

LM4040CEM3-5.0-NOPB (Texas Instruments) offers similar specifications with 0.5% accuracy. LM4040DYM3-5.0-TR (Microchip) provides equivalent 5.0 V output with 1% accuracy in compatible packaging.