LM4050AEM3-4.1/NOPB

Voltage Reference Overview

The LM4050AEM3-4.1/NOPB is a precision micropower shunt voltage reference from Texas Instruments, featuring a fixed reverse breakdown voltage of 4.096 V with an initial accuracy tolerance of ±0.1% at 25°C. It operates within an extended temperature range of -40°C to +125°C and exhibits a maximum temperature coefficient of 50 ppm/°C. The device supports a wide operating current range from a minimum of 78 μA to a maximum of 15 mA, with typical noise of 93 μVrms (10 Hz to 10 kHz). Packaged in a compact SOT-23 surface-mount format, it eliminates the need for external stabilizing capacitors.

Voltage Reference Feature Summary

• Compact SOT-23 package designed for space-critical applications
• Capable of tolerating capacitive loads without external stabilization components
• High precision A-grade output voltage tolerance of ±0.1%
• Low power consumption suitable for battery-powered equipment

Voltage Reference Applications

• Portable, battery-powered equipment
• Data acquisition systems
• Instrumentation
• Process control
• Precision audio components

Voltage Reference Procurement Notes

Verify that the specific part number matches the required A-grade tolerance and extended temperature rating. Confirm the SOT-23 package orientation and pinout compatibility with the target PCB footprint. Ensure the design accounts for the minimum operating current requirements across the full specified temperature range to maintain regulation stability.

Voltage Reference Selection Notes

Select this component when high accuracy and low power are critical in a small form factor. The A-grade designation ensures tighter initial voltage tolerance compared to B or C grades. Consider the extended temperature range capability if the application environment exceeds standard industrial limits. Verify that the load current remains within the specified operational boundaries to prevent instability.

Voltage Reference Part Context

This device belongs to the LM4050-N family of precision shunt voltage references. It shares architectural similarities with other variants offering different fixed voltages such as 2.048 V, 2.5 V, 5 V, and 10 V. The family utilizes fuse and Zener-zap trimming during wafer sort to achieve high accuracy. It is distinct from the automotive-qualified LM4050-Q1 variant, which carries AEC-Q100 certification.

Voltage Reference Replacement Considerations

LM4050AIM3X-4.1/NOPB

Voltage Reference FAQ

Does the LM4050AEM3-4.1/NOPB require an output capacitor for stability?

No, the LM4050-N design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load.

What is the minimum operating current for the 4.1-V option?

The minimum operating current is typically 68 μA at 25°C and increases to 78 μA across the extended temperature range.