LM4040D50ILPR

Overview

The LM4040D50ILPR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 5V with an initial accuracy tolerance of ±1% and a maximum 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 stable reference voltage with tight output tolerances and low temperature coefficient
• Operates with wide current range from 45μA typical to 15mA maximum
• Stable with all capacitive loads eliminating the need for output capacitors
• Designed for portable applications with low power consumption

Applications

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

Procurement Notes

Verify the specific ordering suffix 'I' confirms the industrial temperature range of -40°C to 85°C. Confirm the package type matches the required PCB layout, as the LM4040 series is available in multiple packages including SOT-23 and TO-92. Ensure the D grade specification aligns with the required 1% accuracy and 150ppm/°C temperature coefficient for the application design.

Selection Notes

Select this component when a 5V fixed reference with 1% accuracy is required. The D grade offers a cost-effective solution compared to higher grades like A or B. Consider the operating temperature range; if extended temperatures up to 125°C are needed, the Q grade variant should be selected instead. Verify that the minimum operating current of 45μA fits within the circuit's biasing constraints.

Part Context

The LM4040 series includes A, B, C, and D grades offering varying levels of accuracy and temperature stability. The D grade specifically targets applications where 1% accuracy and 150ppm/°C stability are sufficient. The 'I' suffix denotes the industrial temperature range, distinguishing it from the 'Q' grade which supports extended temperatures up to 125°C.

Replacement Considerations

LM4040D50QDBZR