LM4050QAIM3X4.1/NOPB

Voltage Reference Overview

The LM4050QAIM3X4.1/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, designed for automotive applications with AEC-Q100 qualification. It provides a fixed output voltage of 4.096 V with an initial accuracy of ±0.5% and a temperature coefficient of 50 ppm/°C. The device operates within a junction temperature range of -40°C to +125°C and features a maximum shunt current of 15 mA. It consumes a typical cathode current of 78 µA and exhibits a noise level of 93 µVrms from 10 Hz to 10 kHz. The component is housed in a compact SOT-23-3 surface-mount package.

Voltage Reference Feature Summary

• Automotive-grade reliability certified under the AEC-Q100 standard for sustained performance in demanding environments.
• Micropower architecture ensures minimal quiescent current consumption while maintaining high precision voltage regulation.
• Compact SOT-23-3 surface-mount packaging facilitates efficient board space utilization in dense electronic designs.

Voltage Reference Applications

• Automotive data acquisition systems requiring stable reference voltages
• Precision analog-to-digital converter (ADC) reference inputs
• Battery management system monitoring circuits

Voltage Reference Procurement Notes

Verify the complete part number including suffixes to ensure correct voltage, tolerance, and packaging specifications. Confirm AEC-Q100 qualification status if automotive compliance is required. Check RoHS directives and environmental compliance documentation prior to integration. Ensure compatibility with existing PCB footprints for the SOT-23-3 package. Validate supply chain authenticity through authorized distributors.

Voltage Reference Selection Notes

Select this component when a fixed 4.096 V reference with ±0.5% initial accuracy is required for automotive-grade applications. Consider the 50 ppm/°C temperature coefficient for thermal stability needs. Evaluate the 78 µA cathode current against power budget constraints. Ensure the SOT-23-3 package fits the mechanical design. Verify that the 15 mA maximum shunt current meets load requirements.

Voltage Reference Part Context

This device belongs to the LM4050 family of precision micropower shunt voltage references from Texas Instruments. The 'Q' designation indicates automotive qualification, while 'AI' specifies the 4.096 V output with ±0.5% accuracy. The 'M3' denotes the SOT-23-3 package, and '/NOPB' signifies lead-free construction without halogenated flame retardants. This series supports various fixed voltage options tailored for different reference needs.

Voltage Reference Replacement Considerations

Direct substitutes include other LM4050 variants with matching voltage and accuracy, such as LM4050QAIM3X2.0/NOPB or LM4050QCEM3X4.1/NOPB, provided pinout and package compatibility are verified. Cross-reference datasheets for temperature coefficients and noise specifications to ensure functional equivalence in the specific application context.