LM4128AMFX-2.0/NOPB

Voltage Reference Overview

The LM4128AMFX-2.0/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.048 V with an initial accuracy of 0.1%. The device operates within a supply voltage range up to 6 V and draws a typical quiescent current of 60 uA. It features a temperature coefficient of 75 ppm/°C and supports a maximum shunt current of 20 mA. The component is housed in a SOT-23-5 package and functions reliably across an extended industrial temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Provides high-precision voltage regulation with tight initial accuracy tolerances for sensitive analog circuits.
• Operates at ultra-low power consumption, suitable for battery-powered and energy-efficient applications.
• Maintains stable reference performance over wide temperature variations and input voltage fluctuations.

Voltage Reference Applications

• Precision data acquisition systems requiring stable reference voltages
• Battery-powered instrumentation and portable measurement devices
• Analog-to-digital converter (ADC) reference inputs

Voltage Reference Procurement Notes

Verify the complete part number including suffixes such as NOPB and AMF to ensure correct accuracy grade and packaging. Confirm RoHS compliance status through official manufacturer documentation before integration. Check for automotive qualification requirements if the application demands AEC-Q100 standards, as standard variants differ from qualified versions.

Voltage Reference Selection Notes

Select this component when a 2.048 V reference with 0.1% accuracy is required in a compact surface-mount package. Compare against higher accuracy grades like the B variant or lower cost C variant based on specific circuit tolerance needs. Ensure the 6 V maximum input voltage and 20 mA shunt current limits align with the system design constraints.

Voltage Reference Part Context

This device belongs to the LM4128 series of micropower shunt voltage references. It shares the same functional architecture and pinout with other variants in the family, differing primarily in output voltage options and accuracy grades. The series is designed to replace older zener diode references with superior stability and lower noise characteristics.

Voltage Reference Replacement Considerations

Direct substitutes include LM4128BMFX-2.0/NOPB for tighter accuracy or LM4128CMFX-2.0/NOPB for cost-sensitive designs. Automotive-grade equivalents are available as LM4128AQ1MF-2.0/NOPB. Verify pin compatibility and thermal performance when swapping between accuracy grades.