LM4040D41ILPR

Overview

The LM4040D41ILPR is a precision micropower shunt voltage reference from Texas Instruments, featuring a fixed output of 4.096V. It belongs to the D grade with an initial accuracy of ±1% and a maximum temperature coefficient of 150ppm/°C. The device operates within a cathode current range of 45μA to 15mA and supports an ambient temperature range of –40°C to 85°C. Packaged in a space-saving SC-70 (DCK) format, it requires no external capacitors for stability.

Feature Summary

• Provides stable reference voltage without requiring external output capacitors
• Maintains low dynamic impedance and noise across wide operating currents
• Utilizes fuse and Zener-zap reverse breakdown voltage trim during wafer sort

Applications

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

Procurement Notes

Verify the specific ordering suffix 'ILPR' against the manufacturer's latest Package Option Addendum to confirm the exact package type and reel specifications. Ensure the component matches the required industrial temperature range and tolerance grades for your design. Cross-reference datasheet revision SLOS456Q for any recent updates to electrical characteristics or pin configurations before finalizing procurement.

Selection Notes

Select this component when a fixed 4.096V reference with ±1% accuracy is required in a compact surface-mount footprint. The SC-70 package suits portable applications where board space is limited. Consider the 150ppm/°C temperature coefficient for environments with moderate thermal variations. Verify that the minimum operating current of 45μA aligns with the circuit's quiescent requirements.

Part Context

This part is part of the LM4040 series of shunt voltage references, designed for versatile use in various electronic systems. The series offers multiple output voltages and accuracy grades, allowing designers to balance cost and performance. The LM4040D41ILPR specifically targets applications needing reliable voltage referencing in industrial and consumer electronics.

FAQ

Does the LM4040D41ILPR require an output capacitor?

No, the device is stable with all capacitive loads and does not require an external output capacitor for operation.

What is the recommended connection for the NC pin in the SC-70 package?

In high electromagnetic interference environments, TI recommends connecting the NC pin to the anode. Otherwise, it may float.