LM4040B25IDCKR

Overview

The LM4040B25IDCKR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±0.2%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 100 ppm/°C. It supports a maximum cathode current of 15 mA and requires a minimum operating current of 75 µA. The component is housed in a compact SC-70-5 surface-mount package.

Feature Summary

• Provides stable 2.5 V reference voltage with high precision
• Operates with low quiescent current for power efficiency
• Compact SC-70-5 surface-mount package design

Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring precise references
• Microcontroller analog-to-digital converter references

Procurement Notes

Verify the specific suffix IDCKR confirms the SC-70-5 package and 2.5V output variant. Confirm RoHS compliance status as indicated in official documentation. Check for any obsolescence notices or lifecycle changes from Texas Instruments before finalizing procurement plans.

Selection Notes

Select this component when a 2.5 V reference with ±0.2% accuracy is required in a small footprint. Ensure the application current stays between 75 µA and 15 mA. Consider the 100 ppm/°C temperature coefficient for thermal stability requirements in the target environment.

Part Context

Part of the LM4040 family of micropower shunt voltage references. This series offers various fixed voltage options and accuracy grades. The LM4040B25IDCKR specifically targets applications needing high precision in a miniaturized surface-mount form factor.

Replacement Considerations

LM4040B25IDCKRE4 is a verified replacement variant with updated environmental compliance markings.