LM4050CIX3-2.1

Voltage Reference Overview

The LM4050CIX3-2.1 is a precision two-terminal shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown voltage of 2.048V with an initial accuracy of 0.5% and a maximum temperature coefficient of 50ppm/°C. The device operates within a wide current range of 60µA to 15mA and features low dynamic impedance without requiring external stabilizing capacitors. It is housed in a subminiature 3-pin SC-70 surface-mount package (1.8mm x 1.8mm) and is guaranteed to function over the extended industrial temperature range of -40°C to +125°C.

Voltage Reference Feature Summary

• Ultra-small 3-pin SC-70 surface-mount package for space-critical applications
• Laser-trimmed resistors ensure excellent initial accuracy
• Stable reverse breakdown voltage across wide operating currents and temperatures
• No output capacitors required for stability

Voltage Reference Applications

• Portable instrumentation
• Battery-powered systems
• Data acquisition systems
• Handheld meters

Voltage Reference Procurement Notes

Verify the specific suffix 'CIX3' against official manufacturer documentation to confirm the exact package type, accuracy grade, and tape-and-reel specifications. Ensure the component matches the intended PCB footprint and thermal requirements for the target application environment.

Voltage Reference Selection Notes

Select this component when a compact form factor is required alongside high precision. The 2.048V output is suitable for interfacing with ADCs that utilize standard binary-weighted reference voltages. Consider the 0.5% initial accuracy and 50ppm/°C drift for applications demanding stable performance over varying ambient conditions.

Voltage Reference Part Context

This part belongs to the LM4050/LM4051 family of micropower shunt voltage references. The series offers multiple fixed reverse breakdown voltages including 1.225V, 2.500V, 3.000V, and 5.000V. The family is characterized by low noise and high stability, making it a standard choice for precision analog circuits where size and power consumption are constrained.

Voltage Reference Replacement Considerations

LM4050CEX3-2.1+ is a documented equivalent offering identical electrical characteristics and pinout compatibility.