LM4040A20IDCKR

Overview

The LM4040A20IDCKR is a precision micropower shunt voltage reference IC manufactured by Texas Instruments. It provides a fixed 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 features a maximum shunt current of 15 mA. It utilizes a SC-70-5 (SOT-353) surface-mount package.

Feature Summary

• Provides stable fixed reference voltage for analog circuits
• Designed for low power consumption applications
• Suitable for space-constrained surface mount designs

Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Handheld meters

Procurement Notes

Verify the specific suffix IDCKR corresponds to the SC-70-5 package and tape-and-reel configuration. Confirm RoHS compliance status and check for any recent production lifecycle notices or obsolescence warnings from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a 2.048 V reference with ±1% tolerance is required in a compact SC-70-5 footprint. Ensure the application current does not exceed the 15 mA maximum shunt rating and that the operating environment remains within the specified -40°C to +85°C temperature range.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references. The series offers various fixed voltage options and accuracy grades, designed to replace Zener diodes in precision applications requiring better stability and lower noise characteristics in small packages.

Replacement Considerations

LM4040A20IDCKRG4 is a verified equivalent variant within the same family.