LM4040D20ILPR

Overview

The LM4040D20ILPR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.048V with an initial accuracy tolerance of ±1%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 150ppm/°C. Designed for surface-mount applications, it utilizes the TO-92-3 (TO-226AA) package. Key electrical specifications include a maximum cathode current of 80µA and a maximum load current capability of 15mA.

Feature Summary

• Provides stable fixed reference voltage suitable for precision analog circuits
• Micropower consumption design minimizes energy usage in battery-operated systems
• Shunt regulation topology allows simple two-terminal integration

Applications

• Portable instrumentation requiring low power consumption
• Battery-powered measurement devices
• Data acquisition systems needing stable reference sources

Procurement Notes

Verify the specific suffix ILPR confirms the TO-92-3 through-hole compatible surface mount package variant. Ensure the D series designation matches the required ±1% accuracy level for your application. Confirm RoHS compliance status if environmental regulations apply to your manufacturing process. Check datasheet revisions for any recent parameter updates before finalizing procurement.

Selection Notes

Select this component when a 2.048V reference is needed with moderate precision requirements. The TO-92-3 package offers board space efficiency compared to larger through-hole options while maintaining robust mechanical stability. Consider the 150ppm/°C temperature coefficient against your system's thermal environment to ensure long-term accuracy meets design specifications.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references from Texas Instruments. The family includes various output voltages and accuracy grades, such as the LM4040A for higher precision or other suffixes for different packages. The LM4040 series is widely used in industrial and consumer electronics where reliable voltage referencing is critical for ADC/DAC performance.

Replacement Considerations

LM4040D20ILPRE3 is the lead-free version of this component. Other LM4040 variants with different output voltages or accuracy grades may serve as functional substitutes if electrical parameters align with circuit requirements.