LM4040D82IDBZT

Overview

The LM4040D82IDBZT 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 85°C and requires a minimum cathode current of 45µA typical. It features low dynamic impedance, low noise, and stability with all capacitive loads without requiring external capacitors.

Feature Summary

• Provides a stable fixed output voltage of 8.192V with tight tolerance specifications for precision applications.
• Operates efficiently with a minimum cathode current requirement of 45µA, suitable for battery-powered systems.
• Maintains performance across a wide operating current range from 45µA to 15mA with low dynamic impedance.
• Ensures stability with any capacitive load configuration without the need for additional output capacitors.

Applications

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

Procurement Notes

Verify the specific suffix 'DBZR' indicates tape-and-reel packaging when sourcing. Confirm the 'I' designation aligns with the required industrial temperature range of -40°C to 85°C. Ensure the D grade specification matches the 1.0% accuracy requirement. Check RoHS compliance status as per the latest manufacturer documentation before finalizing procurement orders.

Selection Notes

Select this component when an 8.192V reference is needed with 1% accuracy in space-constrained designs. The SOT-23 package offers a compact footprint for portable electronics. Consider the 150ppm/°C temperature coefficient for environments with moderate thermal variations. Verify that the 45µA minimum current draw fits within the system's power budget constraints.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references. The series includes various grades (A, B, C, D) offering different accuracy levels and temperature coefficients. The LM4040D represents the D-grade variant with 1% accuracy. Other variants include LM4040A, LM4040B, and LM4040C for higher precision requirements.

Replacement Considerations

LM4040D82IDBZRG4 is a verified replacement with identical electrical characteristics and extended lead-free manufacturing specifications.