LM4128AMFX-3.0

Voltage Reference Overview

The LM4128AMFX-3.0 is a micropower series voltage reference manufactured by Texas Instruments, housed in an SOT-23 package. It provides a fixed output voltage of 3 V with an initial accuracy of 0.1% and a temperature coefficient of 75 PPM/C. The device supports a maximum input voltage of 6 V and a shunt current up to 20 mA. It operates within a temperature range of -40°C to +125°C.

Voltage Reference Feature Summary

• Provides stable precision voltage reference performance
• Designed for low power consumption applications
• Capable of operation across extended industrial temperature ranges

Voltage Reference Applications

• Portable instrumentation systems
• Battery-powered measurement devices
• Data acquisition circuits requiring stable references

Voltage Reference Procurement Notes

Verify the specific suffix 'AMFX' against official datasheets to confirm package type and temperature grade. Confirm RoHS compliance status as documentation indicates non-compliance. Check current lifecycle status as sources list this part as obsolete or discontinued. Ensure compatibility with existing PCB footprints before procurement.

Voltage Reference Selection Notes

Select this component when a 3 V reference with 0.1% accuracy is required in a compact SOT-23 form factor. Consider the 75 PPM/C temperature coefficient for thermal stability needs. Evaluate the 6 V maximum input voltage limit against supply rails. Compare against LM4128 variants if different accuracy or package options are needed.

Voltage Reference Part Context

This part belongs to the LM4128 family of micropower series voltage references from Texas Instruments. It shares functional similarities with other members like the LM4128BMF and LM4128DMFX series, differing primarily in accuracy grades and output voltages. The family is designed for space-constrained, battery-operated applications.

Voltage Reference Replacement Considerations

Publicly confirmed substitute part numbers for this specific obsolete variant are not available in the provided documentation. Verify cross-references with LM4128AMF-3.0/NOPB or similar family members through official manufacturer channels.