LM4051AIX3-1.2+

Voltage Reference Overview

The LM4051AIX3-1.2+ is a precision two-terminal shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown voltage of 1.225V with an initial accuracy of ±0.1% at 25°C. The device operates within a wide current range of 60µA to 15mA and features a maximum temperature coefficient of 50ppm/°C over the -40°C to +125°C extended temperature range. It utilizes a subminiature 3-pin SC-70 surface-mount package (1.8mm x 1.8mm) and exhibits low output noise of 28µVRMS from 10Hz to 10kHz.

Voltage Reference Feature Summary

• Guaranteed high precision with ±0.1% initial accuracy at 25°C
• Operates stably without external output capacitors across any capacitive load
• Ultra-small footprint in a 3-pin SC-70 surface-mount package

Voltage Reference Applications

• Portable, battery-powered equipment
• Notebook computers
• Cell phones
• Industrial process controls
• Automotive systems

Voltage Reference Procurement Notes

Verify the specific suffix against official documentation to confirm compliance status and temperature grade. Confirm that the ordering part number matches the required electrical specifications and package type. Ensure the component source is authorized to guarantee authenticity and traceability for quality assurance purposes.

Voltage Reference Selection Notes

Select this component when space constraints require a subminiature package smaller than standard SOT-23. Choose this variant for applications demanding high initial accuracy and stability without the need for external stabilization capacitors. Verify that the operating current range and temperature requirements align with the system design parameters.

Voltage Reference Part Context

This component belongs to the LM4050/LM4051 family of precision micropower shunt voltage references. The family offers multiple fixed reverse breakdown voltages including 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. These devices are designed for space-critical applications requiring high precision and low power consumption.

Voltage Reference Replacement Considerations

Compatible substitutes include other LM4051 variants with different voltage outputs or packages, such as LM4051AIM3X-1.2. Cross-reference specific suffixes to ensure identical electrical characteristics and physical dimensions before substitution.