LM4128DMFX-2.0

Voltage Reference Overview

The LM4128DMFX-2.0/NOPB is a precision micropower series voltage reference manufactured by Texas Instruments, housed in a SOT-23-5 surface-mount package. It provides a fixed output voltage of 2.048 V with an initial accuracy of 1% and a temperature coefficient of 100 ppm/°C. The device operates within an input voltage range up to 6 V and supports a maximum shunt current of 20 mA. It functions reliably across an extended temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Provides stable series voltage reference performance in a compact SOT-23-5 package
• Designed for low power consumption applications with micropower operation characteristics
• Ensures high precision through tight initial accuracy specifications

Voltage Reference Applications

• Portable battery-powered instrumentation systems
• Data acquisition channels requiring precise analog references
• Microcontroller supply monitoring circuits

Voltage Reference Procurement Notes

Verify the complete part number includes the /NOPB suffix to confirm lead-free compliance and specific tape-and-reel packaging configuration. Confirm the 'M' suffix indicates the standard reel quantity of 3000 units. Ensure the design accommodates the SOT-23-5 footprint dimensions and thermal requirements for the specified operating temperature range.

Voltage Reference Selection Notes

Select this component when a fixed 2.048 V reference is required with 1% initial accuracy. It is suitable for designs prioritizing low quiescent current and small board space over automotive qualification or tighter tolerance grades. Compare against LM4128 variants if higher accuracy or different output voltages are needed.

Voltage Reference Part Context

This device belongs to the LM4128 family of precision micropower series voltage references. It shares functional similarities with other members like the LM4128A and LM4128B but offers standard 1% accuracy. It serves as a cost-effective solution for general-purpose industrial and commercial applications where automotive certification is not mandatory.

Voltage Reference Replacement Considerations

LM4128AMFX-2.0/NOPB offers improved 0.1% accuracy. LM4128AQ1MFX2.0/NOPB provides AEC-Q100 automotive qualification. LM4128BQ1MFX2.0/NOPB offers 0.2% accuracy with automotive qualification.