LM4128AMFX-1.8/NOPB

Voltage Reference Overview

The LM4128AMFX-1.8/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, featuring an output voltage of 1.8 V with an initial accuracy of 0.1%. It operates within a temperature range of -40°C to +125°C and exhibits a temperature coefficient of 75 ppm/°C. The device draws a typical supply current of 60 µA and supports a maximum shunt current of 20 mA. It is housed in a compact SOT-23-5 package and is designed for applications requiring high stability and low power consumption.

Voltage Reference Feature Summary

• Provides stable 1.8 V reference output with 0.1% initial accuracy
• Operates at micropower levels with 60 µA supply current
• Maintains performance across extended industrial temperature ranges

Voltage Reference Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Microcontroller analog-to-digital converter references

Voltage Reference Procurement Notes

Verify the specific suffix 'AMFX' corresponds to the required accuracy grade and reel packaging configuration. Confirm that the 'NOPB' designation indicates lead-free and RoHS compliance status as per the manufacturer's latest documentation before finalizing procurement specifications.

Voltage Reference Selection Notes

Select this component when a fixed 1.8 V reference is required with tight tolerance constraints. Ensure the application circuit can accommodate the minimum operating current requirements and that the thermal environment remains within the specified -40°C to +125°C operational limits for optimal long-term stability.

Voltage Reference Part Context

This part belongs to the LM4128 series of precision micropower shunt voltage references from Texas Instruments. The series offers various output voltages and accuracy grades, utilizing a bandgap reference architecture to deliver reliable performance in space-constrained surface-mount designs.

Voltage Reference Replacement Considerations

Consult official substitution guides for equivalent parts within the LM4128 family or other TI precision reference lines. Verify pinout compatibility and electrical parameter alignment before considering alternative manufacturers.