LM4040D50IDBZRG4

Overview

The LM4040D50IDBZRG4 is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 5V with an initial accuracy of 1% and a temperature coefficient of 150 ppm/°C. The device operates within a cathode current range of 45μA to 15mA and supports an ambient temperature range from -40°C to +85°C. Packaged in a space-saving SOT-23-3 (DBZ) format, it requires no external capacitors for stability.

Feature Summary

• Provides stable reference voltage without requiring output capacitors
• Utilizes fuse and Zener-zap reverse breakdown voltage trim for tight tolerances
• Designed for portable applications due to low minimum operating current
• Offers low dynamic impedance and low noise characteristics

Applications

• Data-Acquisition Systems
• Energy Infrastructure
• Analog Input Modules
• Field Transmitters
• Precision Audio

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and green material status as per Texas Instruments documentation. Confirm the 'I' grade designation corresponds to the industrial temperature range (-40°C to +85°C). Ensure the DBZ package matches the required PCB footprint. Check for any recent Product Change Notifications regarding packaging or marking updates.

Selection Notes

Select this component when a 5V shunt reference with 1% initial accuracy is required. The D-grade specification suits applications where tighter tolerances are not critical but cost-effectiveness is prioritized. Ensure the circuit design accommodates the 150 ppm/°C temperature coefficient over the intended operating range. Verify that the load current remains within the 45μA to 15mA operational window.

Part Context

This part belongs to the LM4040 series of precision micropower shunt voltage references. The series includes A, B, C, and D grades offering varying levels of accuracy and temperature stability. The LM4040D50IDBZRG4 specifically represents the D-grade variant with 1% tolerance, packaged in SOT-23-3, designed for general-purpose precision applications in industrial and consumer electronics.

Replacement Considerations

LM4040D50IDBZR is the non-green version of this component. LM4040C50IDBZRG4 offers improved 0.5% accuracy. LM4040B50IDBZRG4 provides 0.2% accuracy. LM4040A50IDBZRG4 offers the highest precision at 0.1%. All share the same pinout and package.