LM4128AQ1MF1.8/NOPB

Voltage Reference Overview

The LM4128AQ1MF1.8/NOPB is an automotive-grade precision micropower series voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.8 V with an initial accuracy of 0.1%. The device operates within a temperature range of -40°C to +125°C and features a maximum shunt current of 20 mA. It is housed in a SOT-23-5 package and meets AEC-Q100 qualification standards for automotive applications.

Voltage Reference Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards
• High precision performance with 0.1% initial accuracy
• Micropower operation suitable for battery-powered systems

Voltage Reference Applications

• Automotive sensor signal conditioning
• Data acquisition systems requiring stable reference voltages
• Battery management system monitoring circuits

Voltage Reference Procurement Notes

Verify the complete part number including suffixes such as NOPB, which indicates lead-free status, against official Texas Instruments documentation. Confirm that the specific variant matches the required automotive qualification (AEC-Q100) and package type (SOT-23-5). Ensure compatibility with your system's input voltage range and thermal requirements before procurement.

Voltage Reference Selection Notes

Select this component when high precision and automotive reliability are required in a compact surface-mount package. The 1.8 V output is suitable for low-voltage ADC references or comparator thresholds. Consider the 6 V maximum input voltage limit and 20 mA shunt current capability when designing the biasing network for your specific application load.

Voltage Reference Part Context

This device belongs to the LM4128 family of precision voltage references. The 'AQ1' designation specifically denotes automotive qualification and enhanced reliability compared to commercial variants. It shares the same functional architecture as other LM4128 models but is optimized for the stringent environmental and longevity demands of automotive electronics.

Voltage Reference Replacement Considerations

LM4128BQ1MF1.8/NOPB offers similar functionality with potentially different accuracy grades. LM4128DMFX-1.8/NOPB is a commercial grade alternative without automotive certification. Verify pinout compatibility and electrical specifications against the datasheet before substituting.