LM4040D20IDCKR

Overview

The LM4040D20IDCKR is a precision shunt voltage reference IC manufactured by Texas Instruments. It provides a fixed output voltage of 2.048V 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 150ppm/°C. It supports a maximum cathode current of 80µA and delivers up to 15mA output current. The component utilizes a SC-70-5 surface-mount package and exhibits a noise level of 35µVrms between 10Hz and 10kHz.

Feature Summary

• Provides stable fixed reference voltage for analog circuits
• Operates as a two-terminal shunt regulator
• Suitable for space-constrained surface-mount designs

Applications

• Portable instrumentation systems
• Battery-powered measurement devices
• Data acquisition systems requiring precise voltage references

Procurement Notes

Verify the specific suffix IDCKR corresponds to the SC-70-5 package configuration. Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications. Ensure the ordering quantity matches the manufacturer's standard reel size or cut tape availability constraints.

Selection Notes

Select this component when a low-cost, fixed 2.048V reference is required in a compact footprint. Consider the 150ppm/°C temperature coefficient for thermal stability needs. Evaluate the 80µA minimum operating current against system quiescent power budgets.

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 across different package types including SOT-23 and SC-70 variants. It serves as a cost-effective alternative to more complex reference architectures.

Replacement Considerations

LM4040D20IDCKRE4