LM4040C20IDCKR

Overview

The LM4040C20IDCKR 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 ±0.5%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 100ppm/°C. It supports a maximum cathode current of 15mA and requires a minimum operating current of 60µA. The component is housed in a SC-70-5 surface-mount package.

Feature Summary

• Provides stable reference voltage with high initial accuracy
• Designed for low power consumption applications
• Compact surface-mount packaging for space-constrained 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 RoHS3 compliance status as per the latest manufacturer documentation. Ensure the ordering part number matches the required 0.5% accuracy grade and 2.048V output specification before procurement.

Selection Notes

Select this component when a compact, low-power shunt reference is required for portable devices. The SC-70-5 package offers a small footprint suitable for dense PCB layouts. Verify that the system's minimum load current requirements are met by the device's 60µA minimum operating current specification.

Part Context

This part belongs to the LM4040 family of precision micropower shunt voltage references from Texas Instruments. The family includes various output voltages and accuracy grades. The 'C' designation indicates the 0.5% accuracy grade, while 'D' denotes 1% accuracy. This specific model targets cost-sensitive applications requiring moderate precision.

Replacement Considerations

LM4040C20IDCKRE4 is a verified equivalent variant within the same product line.