LM4128DMF-4.1/NOPB

Voltage Reference Overview

The LM4128DMF-4.1/NOPB is a micropower shunt voltage reference from Texas Instruments, designed for precision applications requiring low power consumption. It delivers a stable output voltage of 4.096 V with an initial accuracy of 1%. The device operates within a temperature range of -40°C to +125°C and features a temperature coefficient of 100 ppm/°C. It supports a maximum input voltage of 6 V and can handle a maximum shunt current of 20 mA while consuming only 60 µA of operating supply current. Packaged in a compact SOT-23-5 surface-mount case, it serves as a reliable reference source for various electronic circuits.

Voltage Reference Feature Summary

• Provides a precise 4.096 V reference output with 1% initial accuracy
• Operates with ultra-low quiescent current of 60 µA for energy efficiency
• Ensures thermal stability with a temperature coefficient of 100 ppm/°C across extended industrial temperatures
• Compatible with standard surface-mount assembly processes in a small SOT-23-5 package

Voltage Reference Applications

• Portable battery-powered instrumentation systems
• Data acquisition and measurement equipment
• Microcontroller analog-to-digital converter references
• Industrial process control signal conditioning

Voltage Reference Procurement Notes

Verify the exact suffix 'DMF' against the manufacturer's official datasheet to confirm pinout and tolerance specifications. Ensure the component meets RoHS compliance requirements for your region. Confirm availability through authorized distributors, as lead times may vary based on production schedules. Check for automotive qualification if required by your specific application environment.

Voltage Reference Selection Notes

Select this component when a stable 4.096 V reference is needed with minimal power draw. The 1% accuracy suits general-purpose applications where higher precision variants are unnecessary. Consider the SOT-23-5 footprint for space-constrained designs. Evaluate the 100 ppm/°C drift against your system's thermal environment to ensure long-term stability requirements are met without additional compensation circuitry.

Voltage Reference Part Context

This part belongs to the LM4128 family of micropower shunt voltage references. The series offers various fixed output voltages and accuracy grades to suit different design needs. The LM4128 is widely used in portable electronics due to its low current consumption and small package size. It complements other Texas Instruments PMIC solutions for complete power management strategies.

Voltage Reference Replacement Considerations

Check for direct substitutes such as LM4128AIMF-4.1/NOPB for tighter accuracy or LM4128BIMF-4.1/NOPB for improved initial tolerance. Verify pin compatibility before swapping. Alternative manufacturers may offer similar shunt references, but electrical characteristics and thermal performance must be compared carefully.