LM4128AMFX-3.0/NOPB

Voltage Reference Overview

The LM4128AMFX-3.0/NOPB is a micropower series voltage reference manufactured by Texas Instruments, housed in a SOT-23-5 surface-mount 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 operates within an input voltage range up to 6 V and supports a maximum shunt current of 20 mA. It functions reliably across an extended temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Delivers high precision with 0.1% initial accuracy for stable reference applications
• Features low temperature drift of 75 PPM/°C for thermal stability
• Designed for micropower efficiency suitable for battery-operated systems

Voltage Reference Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement devices
• Data acquisition systems needing stable analog references

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free compliance and RoHS adherence as per manufacturer specifications. Confirm the 'A' grade designation ensures the required 0.1% accuracy level. Check current availability status as distribution channels may vary. Ensure the SOT-23-5 footprint matches the target PCB design constraints before finalizing procurement decisions.

Voltage Reference Selection Notes

Select this component when a 3 V reference with tight 0.1% tolerance is required. Compare against lower accuracy variants if cost is a primary driver. Consider the 75 PPM/°C drift specification against environmental temperature variations. Verify that the 20 mA shunt current capability meets the load requirements of the circuit design.

Voltage Reference Part Context

This part belongs to the LM4128 family of precision micropower series voltage references. It shares the same functional architecture as other variants in the series but is distinguished by its specific 3 V output voltage and 'A' grade accuracy classification. The family is designed for applications demanding high stability in small form factors.

Voltage Reference Replacement Considerations

LM4128AMF-3.0/NOPB serves as a direct equivalent without the 'X' reel packaging suffix.