LM4128AMFX-2.5

Voltage Reference Overview

The LM4128AMFX-2.5 is a precision micropower series voltage reference manufactured by Texas Instruments, housed in a SOT-23-5 surface-mount package. It provides a fixed output voltage of 2.5 V with an initial accuracy of 0.1%. The device operates within a temperature range of -40°C to +125°C and features a maximum shunt current of 20 mA and a maximum input voltage of 6 V.

Voltage Reference Feature Summary

• Provides stable reference voltage with high initial accuracy
• Operates at low quiescent current for power efficiency
• Designed for compact surface-mount applications

Voltage Reference Applications

• Portable instrumentation requiring precise voltage standards
• Battery-powered measurement systems
• Data acquisition systems needing stable reference sources

Voltage Reference Procurement Notes

Verify the specific suffix 'AMFX' against official datasheets to confirm the exact accuracy grade and temperature coefficient specifications. Ensure the ordering part number matches the required tolerance and packaging format. Cross-reference with the manufacturer's latest documentation to validate RoHS compliance and availability status before procurement.

Voltage Reference Selection Notes

Select this component when a 2.5 V reference with 0.1% initial accuracy is required in a small SOT-23-5 footprint. Consider the operating temperature range and maximum shunt current limits relative to the application load. Verify that the 6 V maximum input voltage constraint aligns with the system supply rails.

Voltage Reference Part Context

This part belongs to the LM4128 family of precision micropower series voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades, designed for applications demanding stability and low power consumption in space-constrained environments.

Voltage Reference Replacement Considerations

Check for direct substitutes within the LM4128 series with matching voltage and accuracy. Verify pinout compatibility and thermal performance if replacing with other manufacturers' equivalents.