LM4051AIM3X-1.2

Voltage Reference Overview

The LM4051AIM3X-1.2 is a precision micropower shunt voltage reference manufactured by Texas Instruments, housed in an SOT-23-3 surface-mount package. It provides a fixed output voltage of 1.225 V with an initial accuracy of ±0.1%. The device features a temperature coefficient of 50 ppm/°C and supports a maximum cathode current of 12 mA. It operates within a temperature range of -40°C to +85°C.

Voltage Reference Feature Summary

• Provides a fixed 1.225V output with high precision tolerance
• Operates without external stabilization capacitors under any capacitive load
• Features low dynamic impedance and low output noise for stable performance

Voltage Reference Applications

• Data acquisition systems
• Battery-powered equipment
• Precision audio applications

Voltage Reference Procurement Notes

Verify the specific suffix 'A' indicates the 0.1% accuracy grade and 'M3X' denotes the SOT-23-3 reel packaging configuration. Confirm that the '-NOPB' designation ensures compliance with RoHS standards and absence of lead. Cross-reference the full part number against official TI documentation to ensure correct temperature rating and package type before procurement.

Voltage Reference Selection Notes

Select this component when a compact footprint is required alongside high precision. The A-grade variant offers tighter initial accuracy compared to B or C grades. Ensure the application current remains within the specified operational limits to maintain stability and accuracy across the industrial temperature range.

Voltage Reference Part Context

This part belongs to the LM4051-N family of micropower shunt references. It shares core architectural features with other variants in the series but differs in specific accuracy grading and output voltage options. The family is designed for space-constrained applications requiring reliable voltage referencing.

Voltage Reference Replacement Considerations

LM4051AIM3X-ADJ/NOPB

Voltage Reference FAQ

Does the LM4051AIM3X-1.2 require an output capacitor for stability?

No, the device is designed to remain stable under all capacitive load conditions without requiring an external output capacitor.

What is the minimum operating current for this device?

The typical minimum operating current is 60 µA, allowing for efficient operation in low-power applications.