LM4128CQ1MF2.0/NOPB

Voltage Reference Overview

The LM4128CQ1MF2.0/NOPB is an automotive-grade series precision voltage reference from Texas Instruments, housed in a SOT-23-5 package. It provides a fixed output of 2.048 V with an initial accuracy of ±0.5%. The device operates within a supply voltage range of 3.4 V to 5.5 V and supports a maximum shunt current of 20 mA. It features a temperature coefficient of 100 ppm/°C and consumes 100 µA of supply current. Qualified under AEC-Q100 standards, it functions reliably between -40°C and +125°C.

Voltage Reference Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability
• Series precision architecture delivering stable reference voltage
• Low power consumption suitable for battery-operated systems

Voltage Reference Applications

• Automotive data acquisition systems
• Portable instrumentation requiring precise voltage references
• Battery-powered measurement devices

Voltage Reference Procurement Notes

Verify the specific suffix 'C' indicates the ±0.5% accuracy grade distinct from other variants. Confirm the 'Q1' designation aligns with required automotive qualification levels. Ensure the 'MF2.0' suffix matches the necessary 2.048 V output specification. Check that the 'NOPB' suffix confirms lead-free and RoHS compliance status before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when a fixed 2.048 V reference with ±0.5% tolerance is required for automotive applications. It is suitable for designs needing low quiescent current and operation up to 125°C junction temperature. Consider alternative grades if tighter initial accuracy or lower temperature coefficients are necessary for the specific circuit requirements.

Voltage Reference Part Context

This part belongs to the LM4128 family of series voltage references designed for high-precision applications. The LM4128 series offers various output voltages and accuracy grades, with the 'C' variant providing ±0.5% initial accuracy. The Q1 suffix denotes automotive qualification, ensuring suitability for demanding vehicle environments compared to standard commercial grades.

Voltage Reference Replacement Considerations

LM4128AQ1MF2.0/NOPB (0.1% accuracy), LM4128BQ1MF2.0/NOPB (0.2% accuracy). Verify package compatibility and electrical parameter differences before substitution.