LM4128AQ1MFX3.0/NOPB

Voltage Reference Overview

The LM4128AQ1MFX3.0/NOPB is an automotive-grade precision shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 3.0 V with an initial accuracy of 0.1 percent 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. 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 case, it meets AEC-Q100 qualification standards for automotive applications.

Voltage Reference Feature Summary

• Automotive-grade reliability certified under the AEC-Q100 standard for robust performance in vehicle environments.
• High precision voltage regulation with tight initial accuracy and low temperature drift characteristics.
• Ultra-low power consumption suitable for battery-operated systems requiring minimal standby current.

Voltage Reference Applications

• Automotive sensor signal conditioning circuits
• Data acquisition systems requiring stable reference voltages
• Microcontroller analog-to-digital converter references

Voltage Reference Procurement Notes

Verify the complete part number including suffixes to ensure correct voltage and package configuration. Confirm AEC-Q100 compliance requirements match specific automotive project specifications. Check datasheet revisions for any updates regarding marking or packaging changes. Ensure ordering quantities align with manufacturer reel or cut tape availability constraints.

Voltage Reference Selection Notes

Select this component when automotive qualification and high precision are required simultaneously. Compare against non-automotive variants if cost reduction is prioritized over ruggedness. Consider alternative output voltages within the LM4128 family if system design requires different reference levels. Evaluate thermal management needs based on the specified operating temperature range and power dissipation limits.

Voltage Reference Part Context

This device belongs to the LM4128 series of micropower precision shunt voltage references. The AQ1 suffix indicates automotive qualification, distinguishing it from commercial grade parts. It shares the same functional architecture as other LM4128 variants but adheres to stricter automotive reliability standards and testing protocols defined by industry regulations.

Voltage Reference Replacement Considerations

LM4128BQ1MFX3.0/NOPB offers similar functionality with slightly relaxed accuracy specifications. LM4128AMFX-3.0/NOPB provides comparable performance without automotive certification. Verify pin compatibility and thermal characteristics before substituting with non-automotive equivalents.