LM4050AIX3-3.3-T

Voltage Reference Overview

The LM4050AIX3-3.3-T is a micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated, designed for precision applications requiring stable output voltages in compact form factors. This specific variant provides a fixed output of 3.3 V with an initial accuracy of 0.1%, ensuring high precision across varying conditions. It operates within a temperature range of -40°C to +125°C and features a temperature coefficient of 50 ppm/°C. The device supports a maximum shunt current of 15 mA and consumes a typical cathode current of 65 µA. Packaged in the SC-70 (SOT-323) surface-mount package, it integrates BICMOS technology for efficient power management in space-constrained designs.

Voltage Reference Feature Summary

• Provides a fixed 3.3 V output with 0.1% initial accuracy for high-precision circuitry.
• Operates over an extended industrial temperature range from -40°C to +125°C.
• Features low micropower consumption with a typical cathode current of 65 µA.
• Utilizes a compact SC-70 (SOT-323) surface-mount package for space-efficient integration.

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the manufacturer designation carefully, as the LM4050 series is produced by both Maxim Integrated (now part of Analog Devices) and Texas Instruments. Confirm that the component matches the specified SC-70 package and 3.3 V output rating. Ensure compatibility with your supply chain requirements regarding the specific suffix codes and packaging options available from authorized distributors.

Voltage Reference Selection Notes

Select this component when a precise 3.3 V reference is required in a minimal footprint. The 0.1% accuracy class is suitable for demanding analog circuits. Consider the 50 ppm/°C temperature coefficient against environmental stability needs. Verify that the 15 mA maximum shunt current meets the load requirements of the target application without exceeding thermal limits.

Voltage Reference Part Context

This component belongs to the LM4050 family of micropower shunt voltage references. The 'A' suffix denotes the 0.1% accuracy grade, while 'IX3' indicates the SC-70 package type. The '-3.3' specifies the 3.3 V nominal output voltage. The '+T' suffix typically refers to tape-and-reel packaging variants used in automated assembly processes.

Voltage Reference Replacement Considerations

LM4050AIM3X-3.3/NOPB (Texas Instruments equivalent)

Voltage Reference FAQ

What is the typical cathode current consumption?

The typical cathode current is 65 µA.

Does this part support operation at high temperatures?

Yes, it is rated for operation up to +125°C.