LM4128BMFX-2.0

Voltage Reference Overview

The LM4128BMFX-2.0/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, housed in a compact SOT-23-5 surface-mount package. It delivers a nominal output voltage of 2.048 V with an initial accuracy of 0.2%. The device operates within a temperature range of -40°C to +125°C and features a maximum input voltage of 6 V. Key electrical specifications include a maximum shunt current of 20 mA and a typical temperature coefficient of 75 ppm/°C.

Voltage Reference Feature Summary

• Provides stable reference voltage with high initial accuracy for precision applications
• Operates at low quiescent current suitable for battery-powered systems
• Compact SOT-23-5 footprint enables space-constrained board designs

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the complete part number including suffixes such as /NOPB or FX when ordering, as these indicate specific packaging or lead-free compliance status. Confirm that the required accuracy grade (B) matches the design specifications. Ensure the operating environment stays within the specified temperature range and voltage limits to maintain performance integrity.

Voltage Reference Selection Notes

Select this component when a 2.048 V reference with 0.2% accuracy is required in a small form factor. Compare against other LM4128 variants if different output voltages or accuracy grades are needed. Consider the 20 mA maximum shunt current limit when designing the biasing circuit to ensure proper regulation under all load conditions.

Voltage Reference Part Context

This device belongs to the LM4128 family of precision micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades to suit different application requirements while maintaining consistent low power consumption and compact packaging options across the series.

Voltage Reference Replacement Considerations

LM4128BMF-2.0/NOPB serves as a direct equivalent in tube packaging. Other LM4128 variants with matching voltage and accuracy may be considered if packaging differences are acceptable.