LM4040D82ILP

Overview

The LM4040D82ILP is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 8.192V with a maximum initial accuracy of 1.0% and a temperature coefficient of 150ppm/°C. The device operates within an ambient temperature range of -40°C to 125°C and requires a minimum cathode current of 45µA typical. It features low dynamic impedance and wideband noise of 35µVRMS, ensuring stable performance across varying loads.

Feature Summary

• Provides a fixed 8.192V reference output with tight tolerance specifications
• Operates stably with all capacitive loads without requiring external compensation capacitors
• Maintains low noise and low dynamic impedance for precise signal conditioning
• Designed for extended industrial temperature environments up to 125°C

Applications

• Data-acquisition systems
• Energy infrastructure monitoring
• Analog input modules
• Field transmitters
• Precision audio equipment

Procurement Notes

Verify the specific suffix 'LP' corresponds to the TO-92 package configuration as indicated in the datasheet pinout diagrams. Confirm that the D grade designation aligns with the required 1% accuracy and 150ppm/°C temperature coefficient for your design constraints. Ensure the operating environment stays within the specified -40°C to 125°C range to maintain guaranteed electrical characteristics.

Selection Notes

Select this component when a fixed 8.192V reference is needed in a through-hole TO-92 package. The D grade offers a balance of cost and performance suitable for general-purpose applications where 1% accuracy is sufficient. Consider the 45µA minimum current requirement to ensure proper regulation during low-power operation phases.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references from Texas Instruments. The series includes various grades (A, B, C, D) offering different accuracy levels and temperature coefficients. The LM4040 family is designed for portable and space-constrained applications, available in SOT-23, SC-70, and TO-92 packages.

Replacement Considerations

LM4040C82ILP is a higher accuracy alternative within the same package and voltage.