LM4050QAIM3-2.5/NOPB

Voltage Reference Overview

The LM4050QAIM3-2.5/NOPB is a micropower shunt voltage reference from Texas Instruments, designed for high precision in automotive and industrial applications. It operates within an extended temperature range of -40°C to +125°C and features an initial accuracy of ±0.1%. The device maintains a low temperature coefficient of 50 ppm/°C and draws a typical cathode current of 65 µA. It supports a maximum shunt current of 15 mA and delivers a fixed output voltage of 2.5 V. Packaged in a compact SOT-23-3 form factor, it meets AEC-Q100 qualification standards.

Voltage Reference Feature Summary

• Automotive-grade reliability with AEC-Q100 qualification for harsh environment operation
• High precision performance with ±0.1% initial accuracy and 50 ppm/°C temperature coefficient
• Micropower consumption with 65 µA typical operating current for battery-sensitive designs
• Compact surface-mount SOT-23-3 package suitable for space-constrained PCB layouts

Voltage Reference Applications

• Automotive sensor signal conditioning circuits
• Data acquisition systems requiring stable reference voltages
• Portable instrumentation powered by limited energy sources
• Medical equipment analog front-ends

Voltage Reference Procurement Notes

Verify the specific suffix QAI against official Texas Instruments documentation to confirm the exact accuracy grade and automotive qualification status. Ensure compatibility with existing footprint designs, as package dimensions must match the target PCB layout. Cross-reference the latest datasheet revision for any updates on recommended operating conditions or handling precautions before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when designing circuits that demand strict tolerance stability across wide temperature variations in automotive environments. The low quiescent current makes it suitable for power-efficient systems, while the high accuracy ensures signal integrity in precision measurement applications. Evaluate thermal management requirements based on the maximum shunt current capability and ambient operating conditions.

Voltage Reference Part Context

This part belongs to the LM4050-N family of micropower shunt voltage references. The 'Q' designation indicates automotive qualification, while 'AI' specifies the ±0.1% accuracy grade. It shares the core architecture with other variants but offers tighter initial tolerance specifications compared to standard commercial grades, targeting high-reliability industrial and automotive sectors.

Voltage Reference Replacement Considerations

LM4050QBIM3-2.5/NOPB offers similar functionality with ±0.2% accuracy. LM4050QAEM3-2.5/NOPB provides equivalent ±0.1% accuracy in the same package. Verify pinout compatibility and electrical parameter overlaps before substituting.