LM4128DQ1MF1.8/NOPB

Voltage Reference Overview

The LM4128DQ1MF1.8/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, designed for automotive applications with AEC-Q100 qualification. It provides a fixed output voltage of 1.8 V with an initial accuracy of 1% 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 integrates high stability features suitable for space-constrained electronic designs.

Voltage Reference Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for robust performance in vehicle environments
• Micropower operation with low quiescent current consumption to minimize energy usage in battery-powered systems
• High precision voltage regulation with tight initial accuracy and stable temperature coefficient characteristics

Voltage Reference Applications

• Automotive sensor signal conditioning circuits requiring stable reference voltages
• Microcontroller analog-to-digital converter (ADC) reference inputs
• Portable instrumentation and measurement devices needing precise voltage benchmarks

Voltage Reference Procurement Notes

Verify the specific suffix 'D' indicates the 1% accuracy grade and 'Q1' denotes automotive qualification when sourcing replacements. Confirm the package type matches the required PCB footprint. Ensure the operating temperature range aligns with the target application environment. Cross-reference the manufacturer part number to avoid confusion with non-automotive variants or different accuracy grades within the same family.

Voltage Reference Selection Notes

Select this component when automotive certification and high precision are mandatory requirements. Compare against other LM4128 variants based on required accuracy levels and temperature coefficients. Consider the low power consumption benefits for battery-operated systems. Evaluate the SOT-23-5 package size constraints against available board space. Ensure the input voltage range meets the system's supply capabilities.

Voltage Reference Part Context

This part belongs to the LM4128 series of precision micropower shunt voltage references. It shares functional similarities with other members like the LM4128DMFX-1.8/NOPB but differs in automotive qualification and specific accuracy grades. The series offers various output voltages and tolerance options to suit diverse design needs while maintaining consistent low-power performance characteristics.

Voltage Reference Replacement Considerations

• LM4128AQ1MF1.8/NOPB