LM4128CMF-1.8/NOPB

Voltage Reference Overview

The LM4128CMF-1.8/NOPB is a precision micropower series voltage reference from Texas Instruments, housed in a SOT-23-5 package. It provides a fixed output voltage of 1.8 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. Maximum input voltage is 6 V, with a maximum shunt current of 20 mA and a quiescent current of 60 µA.

Voltage Reference Feature Summary

• Provides a stable 1.8 V reference voltage with 0.5% initial accuracy
• Operates over an extended industrial temperature range of -40°C to +125°C
• Features low power consumption with 60 µA quiescent current

Voltage Reference Applications

• Portable instrumentation systems requiring precise voltage references
• Battery-powered measurement devices
• Data acquisition systems needing stable reference voltages

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free packaging compliant with RoHS standards. Confirm the 'CMF' designation corresponds to the SOT-23-5 surface-mount package. Ensure the '-1.8' identifier matches the required 1.8 V output voltage for your circuit design before procurement.

Voltage Reference Selection Notes

Select this component when a 1.8 V reference is required with 0.5% accuracy. Consider the 100 ppm/°C temperature coefficient for thermal stability needs. The SOT-23-5 package suits space-constrained designs. Verify input voltage stays below 6 V and shunt current does not exceed 20 mA.

Voltage Reference Part Context

This part belongs to the LM4128 family of precision micropower shunt voltage references. It shares functional characteristics with other variants like LM4128BMF and LM4128DMF, differing primarily in accuracy grades and output voltage options. The family is designed for applications requiring high stability and low power consumption.

Voltage Reference Replacement Considerations

LM4128AMFX-1.8/NOPB offers higher 0.1% accuracy. LM4128DMFX-1.8/NOPB provides 1% accuracy. LM4128Q1MF-1.8/NOPB is the automotive-grade AEC-Q100 qualified alternative.