LM4128AQ1MFX2.0/NOPB

Voltage Reference Overview

The LM4128AQ1MFX2.0/NOPB is an automotive-grade series precision voltage reference IC manufactured by Texas Instruments. It provides a fixed output voltage of 2.048 V with an initial accuracy of 0.1% and a temperature coefficient of 75 ppm/°C. The device operates within a supply voltage range of 3.7 V to 5.5 V and draws a typical quiescent current of 60 µA. It supports a maximum shunt current of 20 mA and functions reliably across an extended temperature range from -40°C to +125°C. Packaged in a compact SOT-23-5 surface-mount format, it meets AEC-Q100 qualification standards for automotive applications.

Voltage Reference Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards
• High precision with 0.1% initial accuracy and low temperature drift
• Ultra-low power consumption suitable for battery-operated systems
• Compact SOT-23-5 package for space-constrained designs

Voltage Reference Applications

• Automotive sensor signal conditioning
• Data acquisition systems requiring stable reference voltages
• Portable medical instrumentation
• Industrial process control loops

Voltage Reference Procurement Notes

Verify the complete part number including suffixes such as 'NOPB' and 'Q1' to ensure correct packaging, tolerance, and automotive qualification. Confirm that the specific revision matches project requirements. Check official Texas Instruments documentation for any recent product change notices or lifecycle status updates before finalizing procurement decisions.

Voltage Reference Selection Notes

Select this component when high accuracy and automotive certification are required in a small footprint. Compare against the LM4128BQ1 variant if relaxed 0.2% accuracy is acceptable. Ensure input voltage remains within the specified 3.7 V to 5.5 V range. Consider thermal management needs given the 20 mA maximum shunt current capability in the SOT-23-5 package.

Voltage Reference Part Context

This device belongs to the LM4128 family of micropower shunt voltage references. It shares architectural similarities with other members like the LM4128BQ1 but offers tighter initial accuracy specifications. The family is designed for applications needing stable reference voltages with minimal power draw. It complements Texas Instruments' broader portfolio of precision analog components for industrial and automotive markets.

Voltage Reference Replacement Considerations

LM4128BQ1MFX2.0/NOPB offers similar functionality with 0.2% accuracy instead of 0.1%. LM4128AQ1MF2.0/NOPB provides the same electrical performance in cut-tape packaging rather than reel. Verify pinout compatibility and thermal characteristics when substituting.