LM4051AIM3-1.2+T

Voltage Reference Overview

The LM4051AIM3-1.2+T is a precision two-terminal shunt-mode bandgap 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%. The device features a maximum temperature coefficient of 50ppm/°C guaranteed over the -40°C to +125°C operating range. It operates within a wide current range from 60µA to 15mA and exhibits low output noise of 28µVRMS (10Hz to 10kHz). Packaged in a subminiature 3-pin SC-70 surface-mount package measuring 1.8mm x 1.8mm, it tolerates capacitive loads without requiring external output capacitors.

Voltage Reference Feature Summary

• Ultra-small 3-pin SC-70 surface-mount package for space-critical applications
• High precision with ±0.1% initial accuracy and 50ppm/°C temperature coefficient
• Wide operating current range supporting micropower requirements
• Capable of driving capacitive loads without stability issues

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 exact specifications such as temperature grade or packaging format. Ensure compatibility with AEC-Q100 requirements if automotive qualification is necessary. Confirm RoHS compliance status through manufacturer declarations. Cross-reference ordering information carefully to distinguish between standard and qualified versions.

Voltage Reference Selection Notes

Select this component when high precision and minimal board space are required. The fixed 1.225V output suits reference needs where lower voltages are preferred. Consider the wide operating current range for efficient power management in battery devices. Verify that the SC-70 package fits the design constraints compared to larger SOT-23 alternatives.

Voltage Reference Part Context

This part belongs to the LM4050/LM4051 family of precision micropower shunt voltage references. The series 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 as drop-in replacements for larger packages while maintaining high performance standards.

Voltage Reference Replacement Considerations

LM4050CEX3-2.1+T

Voltage Reference FAQ

Does the LM4051AIM3-1.2+T require an output capacitor?

No, the device does not require output capacitors and can tolerate capacitive loads directly.

What is the operating temperature range?

The temperature coefficient is guaranteed over the -40°C to +125°C temperature range.