LM4128CMFX-3.0/NOPB

Voltage Reference Overview

The LM4128CMFX-3.0/NOPB is a precision micropower series voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 3.0 V with an initial accuracy of ±0.5%. 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 a maximum shunt current of 20 mA. The component is housed in a SOT-23-5 surface-mount package.

Voltage Reference Feature Summary

• Provides stable, precise reference voltage for analog circuits
• Operates efficiently at low quiescent current levels
• Designed for high stability across wide industrial temperature ranges

Voltage Reference Applications

• Portable instrumentation requiring low power consumption
• Battery-powered measurement systems
• Data acquisition signal conditioning stages

Voltage Reference Procurement Notes

Verify the specific suffix 'F' indicates tape-and-reel packaging configuration when sourcing. Confirm the 'NOPB' designation ensures compliance with RoHS standards and absence of lead-based materials. Cross-reference the manufacturer part number against official Texas Instruments documentation to ensure authenticity and correct revision level before procurement.

Voltage Reference Selection Notes

Select this component when a 3.0 V reference with ±0.5% initial accuracy is required. Ensure the application input voltage remains below the 6 V maximum limit. Verify that the SOT-23-5 footprint matches the PCB layout constraints. Consider the 100 ppm/°C temperature coefficient for thermal stability requirements in the target environment.

Voltage Reference Part Context

This part belongs to the LM4128 family of micropower series voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades. The CM grade specifies the ±0.5% initial accuracy variant. The device serves as a fundamental building block for precision analog front ends and reference sources in mixed-signal designs.

Voltage Reference Replacement Considerations

LM4128CIM3-3.0/NOPB: Same electrical specifications but in a smaller SOT-23-3 package.