LM4050AIX3-4.1+

Voltage Reference Overview

The LM4050AIX3-4.1+ is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown voltage of 4.096V with an initial accuracy of 0.1%. The device features a maximum temperature coefficient of 20ppm/°C and operates within a wide current range from 60µA to 15mA. It is housed in a compact SC-70-3 surface-mount package and supports an operating temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Ultra-small 3-pin SC-70 surface-mount package for space-critical applications
• High initial accuracy of 0.1% ensured by laser-trimmed resistors
• Low temperature coefficient of 20ppm/°C for stable performance across temperatures
• Capacitor-free operation ensuring stability with any capacitive load

Voltage Reference Applications

• Portable instrumentation requiring high precision and low power consumption
• Battery-powered measurement systems needing stable reference voltages
• Data acquisition systems utilizing analog-to-digital converters
• Medical equipment requiring reliable voltage references in compact form factors

Voltage Reference Procurement Notes

Verify the specific suffix 'A' indicates the 20ppm/°C grade, as standard LM4050 variants often specify 50ppm/°C. Confirm the 'IX3' designation corresponds to the SC-70-3 package type. Ensure compatibility with the required 4.096V output level for your circuit design. Check manufacturer documentation for lead time constraints due to limited availability status.

Voltage Reference Selection Notes

Select this component when a 4.096V reference with 0.1% accuracy is required in a minimal footprint. The 20ppm/°C temperature coefficient offers superior thermal stability compared to standard 50ppm/°C versions. Consider the 60µA minimum operating current for low-power battery applications. Verify that the SC-70-3 package fits the PCB layout constraints.

Voltage Reference Part Context

This part 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. The 'A' suffix typically denotes the higher precision 20ppm/°C grade, distinguishing it from the standard 50ppm/°C devices.

Voltage Reference Replacement Considerations

LM4050CEX3-4.1+ is a compatible alternative offering 4.096V output but with a 50ppm/°C temperature coefficient. LM4050AIM3X-4.1/NOPB provides similar functionality in an SOT-23-3 package. Verify package dimensions and electrical specifications before substitution.