LM4128AMF-3.3/NOPB

Voltage Reference Overview

The LM4128AMF-3.3/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed output of 3.3 V with an initial accuracy of ±0.1%. It operates within a supply voltage range of 2.5 V to 6 V and draws a typical quiescent current of 100 µA. The device utilizes a SOT-23-5 surface-mount package and maintains stability across an extended industrial temperature range from -40°C to +125°C. With a maximum shunt current capability of 20 mA and a low noise profile, it serves as a reliable reference source for high-precision analog circuits requiring minimal power consumption.

Voltage Reference Feature Summary

• Provides stable series-shunt voltage regulation with high initial accuracy
• Operates efficiently at low quiescent currents suitable for battery-powered systems
• Maintains performance stability across wide industrial temperature variations

Voltage Reference Applications

• Precision data acquisition systems
• Portable instrumentation
• Battery-powered measurement devices

Voltage Reference Procurement Notes

Verify the specific suffix 'AMF' corresponds to the required accuracy grade and tape-and-reel packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected variant matches the intended thermal management requirements for the target application environment.

Voltage Reference Selection Notes

Select this component when a fixed 3.3 V reference with tight tolerance is required in a compact footprint. Consider the 100 µA operating current against system power budgets. Evaluate the SOT-23-5 package constraints for PCB layout and thermal dissipation needs relative to alternative pin-compatible options.

Voltage Reference Part Context

This part belongs to the LM4128 family of micropower shunt references designed for applications demanding high precision and low power consumption. The LM4128 series offers various fixed output voltages and accuracy grades, allowing designers to optimize cost and performance. The AMF designation indicates specific manufacturing tolerances and packaging formats within this established product line.

Voltage Reference Replacement Considerations

LM4128AIMF-3.3/NOPB provides similar functionality with potentially different accuracy or packaging specifications.