LM4050AIM3-2.1

Voltage Reference Overview

The LM4050AIM3-2.1 is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown output voltage of 2.1V with an initial accuracy of ±0.1%. The device features a maximum temperature coefficient of 50ppm/°C and operates within a wide current range from 60µA to 15mA. It is housed in a subminiature SC-70 (SOT-323) surface-mount package, measuring 1.8mm x 1.8mm. The component ensures stability without requiring external capacitors and functions reliably across a temperature range of -40°C to +125°C.

Voltage Reference Feature Summary

• Ultra-small 3-pin SC-70 surface-mount package for space-critical designs
• High initial accuracy of ±0.1% ensured by laser-trimmed resistors
• Capacitor-free operation maintaining stability with any capacitive load
• Wide operating current range supporting low power consumption applications

Voltage Reference Applications

• Portable battery-powered instrumentation
• Handheld measurement devices
• Space-constrained embedded systems
• Precision data acquisition circuits

Voltage Reference Procurement Notes

Verify the specific suffix and manufacturer designation when sourcing, as the LM4050 series has been produced by Maxim Integrated, Texas Instruments, and Analog Devices. Confirm that the requested part matches the required accuracy grade and package type. Check for RoHS compliance status and ensure the supplier provides valid traceability documentation for quality assurance purposes.

Voltage Reference Selection Notes

Select this component when high precision and minimal board area are critical requirements. The ±0.1% accuracy makes it suitable for demanding analog front ends. Consider the SC-70 footprint constraints during layout. Ensure the design accommodates the minimum operating current of 60µA to maintain regulation stability under all expected load conditions.

Voltage Reference Part Context

This device belongs to the LM4050/LM4051 family of two-terminal shunt voltage references. The family offers multiple fixed voltage options including 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. The LM4050 variant specifically denotes the higher accuracy grades available in the series, distinguishing it from standard tolerance versions.

Voltage Reference Replacement Considerations

Publicly confirmed substitute part numbers for this specific configuration are not available in the provided source material.