LM4040D25IDCKRG4

Overview

The LM4040D25IDCKRG4 is a micropower shunt voltage reference IC manufactured by Texas Instruments. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±1%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 150 ppm/°C. It supports a maximum cathode current of 15 mA and requires a minimum operating current of 80 µA. The component is housed in a SC-70-5 surface-mount package.

Feature Summary

• Provides stable fixed voltage reference for precision applications
• Micropower operation suitable for battery-powered systems
• Compact SC-70-5 surface-mount packaging

Applications

• Portable instrumentation circuits
• Battery-powered measurement devices
• Data acquisition systems requiring stable reference voltages

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS status as per manufacturer documentation. Confirm the SC-70-5 package dimensions match your PCB footprint requirements. Ensure the ±1% accuracy class meets your circuit tolerance specifications before finalizing procurement.

Selection Notes

Select this component when a fixed 2.5 V reference is required in a small surface-mount package. The ±1% accuracy and 150 ppm/°C temperature coefficient define its precision limits. Consider the 80 µA minimum current requirement for biasing design. Verify that the SC-70-5 form factor fits the available board space constraints.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references from Texas Instruments. The series offers various fixed voltage options and accuracy grades. The D-series designation typically denotes ±1% initial accuracy. The IDCKR suffix specifies the SC-70-5 package and reel tape-and-reel packaging format.

Replacement Considerations

LM4040D25IDCKRE4 is a confirmed substitute part number within the same family.