LM4128AMF-2.0

Voltage Reference Overview

The LM4128AMF-2.0 is a precision micropower shunt voltage reference manufactured by Texas Instruments, delivering a nominal output of 2.048 V. It features an initial accuracy of 0.1% and a temperature coefficient of 75 ppm/°C. The device operates within a supply voltage range up to 6 V and draws a typical quiescent current of 60 µA. Designed for SMD/SMT installation in a compact SOT-23-5 package, it supports a maximum shunt current of 20 mA and functions reliably across an extended industrial temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Provides high-precision voltage regulation with tight initial accuracy tolerances suitable for sensitive analog circuits.
• Enables low-power operation through minimal quiescent current consumption, extending battery life in portable applications.
• Maintains stable reference performance over wide thermal variations using advanced bandgap architecture.

Voltage Reference Applications

• Portable instrumentation requiring precise analog-to-digital conversion references
• Battery-powered measurement systems needing low standby power consumption
• Data acquisition channels utilizing serial ADCs for signal conditioning

Voltage Reference Procurement Notes

Verify the complete part number including suffixes such as NOPB or AMFX against official Texas Instruments documentation to ensure correct pinout, accuracy grade, and packaging configuration. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability varies by region and production cycle.

Voltage Reference Selection Notes

Select this component when a 2.048 V reference with 0.1% initial accuracy is required in a small surface-mount footprint. Ensure the application input voltage remains below the 6 V maximum limit and that the load current does not exceed the 20 mA shunt capability while maintaining adequate dropout voltage for regulation.

Voltage Reference Part Context

This device belongs to the LM4128 series of precision micropower shunt voltage references. It shares architectural similarities with other members like the LM4128BMF and LM4128DMF but offers specific accuracy and temperature coefficient characteristics defined by the 'A' grade designation within the Texas Instruments portfolio.

Voltage Reference Replacement Considerations

LM4128AMFX-2.0/NOPB serves as a direct equivalent with identical electrical specifications and pinout compatibility.