LM4040EEM3X-2.0

Overview

The LM4040EEM3X-2.0 is a micropower shunt voltage reference manufactured by Texas Instruments, designed for precision applications requiring stable DC voltage levels. It features a nominal output voltage of 2.048 V with an initial accuracy of 1%. The device operates within a temperature range of -40 °C to +85 °C and exhibits a temperature coefficient of 150 ppm/°C. Maximum shunt current is rated at 15 mA, while minimum operating current is 60 µA. It utilizes a SOT-23 surface-mount package.

Feature Summary

• Provides a fixed precision reference voltage suitable for high-accuracy analog circuits
• Operates with low quiescent current to support battery-powered systems
• Maintains stability across industrial temperature ranges

Applications

• Portable instrumentation requiring precise voltage references
• Battery-operated measurement devices
• Data acquisition systems needing stable reference sources

Procurement Notes

Verify the specific suffix 'EEM3X' against official Texas Instruments documentation to confirm pinout compatibility and thermal characteristics. Ensure the component matches the required accuracy class and temperature rating for your design. Cross-reference the datasheet revision date to ensure alignment with current manufacturing specifications before procurement.

Selection Notes

Select this component when a 2.048 V reference is required in a compact SOT-23 form factor. Consider the 1% initial accuracy and 150 ppm/°C drift if higher precision is needed, alternatives like the CIM3 series may be more appropriate. Evaluate the 15 mA maximum current limit against load requirements to ensure proper biasing conditions are met during operation.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references from Texas Instruments. The family offers various fixed voltage options and accuracy grades. The EEM3X designation indicates a specific variant within the SOT-23 package lineup, differentiated by its voltage output and tolerance specifications compared to other members like the DIM3 or CIM3 series.

Replacement Considerations

LM4040DIM3X-2.0/NOPB is listed as a related alternative in distributor catalogs. Verify electrical parameter compatibility, particularly accuracy and temperature coefficient, before substitution.