LM4128DMFX-4.1/NOPB

Voltage Reference Overview

The LM4128DMFX-4.1/NOPB is a precision shunt voltage reference from Texas Instruments, featuring a fixed output of 4.096 V with an initial accuracy of 1%. It operates within a supply voltage range up to 6 V and supports a maximum shunt current of 20 mA. The device exhibits a temperature coefficient of 100 ppm/°C and functions reliably across an extended industrial temperature range from -40°C to +125°C. Packaged in a compact SOT-23-5 surface-mount format, it draws a typical quiescent current of 60 µA, making it suitable for space-constrained applications requiring stable reference voltages.

Voltage Reference Feature Summary

• Provides a stable 4.096 V reference voltage with 1% initial accuracy
• Operates over an extended temperature range from -40°C to +125°C
• Features low power consumption with 60 µA quiescent current
• Designed for high-reliability environments with robust thermal stability

Voltage Reference Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement systems
• Data acquisition systems needing stable analog references
• Industrial process control circuits

Voltage Reference Procurement Notes

Verify the complete part number including suffixes such as NOPB and package variant (e.g., MF) against official Texas Instruments documentation to ensure correct specifications. Confirm that the requested component matches the required accuracy grade and operating temperature range for your specific application environment before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when a fixed 4.096 V reference with 1% accuracy is required in a small SOT-23-5 package. Ensure the design allows for sufficient headroom above the output voltage and can handle the maximum shunt current of 20 mA. Consider the 100 ppm/°C temperature coefficient if operation outside standard conditions is expected.

Voltage Reference Part Context

This device belongs to the LM4128 family of micropower series voltage references designed for precision applications. It offers a fixed output option alongside adjustable variants, providing designers with flexibility in creating stable reference nodes for analog-to-digital converters and other sensitive circuitry within power management integrated circuits.

Voltage Reference Replacement Considerations

Direct substitutes include LM4128AIMF-4.1/NOPB for tighter accuracy or LM4128BIMF-4.1/NOPB for improved initial tolerance. For automotive applications, consider AEC-Q100 qualified variants like LM4128DQ1MF-4.1/NOPB. Verify pinout compatibility and thermal characteristics when swapping between different accuracy grades within the same package.