LM4050AIM3-4.1+T

Voltage Reference Overview

The LM4050AIM3-4.1+T is a precision micropower shunt voltage reference manufactured by Analog Devices Inc. under the Maxim Integrated brand. It provides a fixed reverse breakdown voltage of 4.096 V with an initial accuracy of 0.1% and a maximum temperature coefficient of 50 ppm/°C. The device operates within a wide temperature range from -40°C to +125°C and supports a shunt current range up to 15 mA. It is housed in a compact SOT-23-3 surface-mount package, designed for space-critical applications requiring stable voltage regulation without external stabilizing capacitors.

Voltage Reference Feature Summary

• Ultra-small 3-pin SC70 or SOT-23 surface-mount packaging for space-constrained designs
• Laser-trimmed resistors ensure high initial accuracy and stability
• Capable of maintaining stable reverse breakdown voltage across a wide operating current range
• Operates reliably over an extended industrial temperature range

Voltage Reference Applications

• Portable instrumentation systems requiring precise voltage references
• Battery-powered equipment where low power consumption is critical
• Data acquisition systems needing stable analog-to-digital converter references
• Medical devices requiring high accuracy in signal conditioning circuits

Voltage Reference Procurement Notes

Verify the manufacturer designation carefully, as this component may be sourced from either Analog Devices or Texas Instruments depending on the specific suffix and production lot. Confirm the package type matches your PCB footprint requirements, as variations exist between SC70 and SOT-23. Ensure the temperature grade meets your environmental specifications before finalizing procurement decisions.

Voltage Reference Selection Notes

Select this component when a 4.096 V reference with 0.1% accuracy is required in a small form factor. Consider the 50 ppm/°C temperature coefficient for thermal stability needs. Evaluate the 15 mA maximum shunt current against your circuit's load requirements. Verify compatibility with your system's operating temperature range and power constraints.

Voltage Reference Part Context

This part belongs to the LM4050 series of precision micropower shunt voltage references. The series offers multiple fixed voltage options including 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. The 'A' grade indicates tighter initial accuracy compared to standard grades, while the 'M3' suffix denotes the specific surface-mount package configuration used in modern electronics manufacturing.

Voltage Reference Replacement Considerations

LM4050BIM3-4.1/NOPB: Similar shunt reference with potentially different accuracy or temperature coefficient grades; verify datasheet parameters. LM4040AIM3-4.1: Improved precision variant with lower noise characteristics; check if enhanced performance justifies potential cost differences.