LM4120AIM5X-3.0

Voltage Reference Overview

The LM4120AIM5X-3.0 is a precision micropower low dropout voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 3 V with an initial accuracy of 0.2%. The device operates within an input voltage range up to 14 V and supports a maximum shunt current of 5 mA. It features a temperature coefficient of 50 PPM/°C and functions reliably across a temperature range from -40°C to +85°C. Packaged in a compact SOT-23 form factor, it is designed for space-constrained applications requiring stable voltage regulation.

Voltage Reference Feature Summary

• Precision series voltage reference topology
• Micropower low dropout operation
• High initial accuracy specification
• Compact surface-mount packaging

Voltage Reference Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Microcontroller supply monitoring
• ADC reference sources

Voltage Reference Procurement Notes

Verify the specific suffix configuration against official datasheets to ensure correct output voltage and package type. Confirm RoHS compliance status as indicated by manufacturer documentation. Check for end-of-life notices or obsolescence warnings prior to final design approval. Ensure sourcing channels provide valid traceability for quality assurance purposes.

Voltage Reference Selection Notes

Select this component when a fixed 3 V reference with tight tolerance is required in a small footprint. Consider the 50 PPM/°C drift if operating over wide thermal ranges. Evaluate power consumption requirements against the micropower characteristics. Compare against alternative series references if lower noise or higher precision is necessary for the specific application.

Voltage Reference Part Context

This part belongs to the LM4120 family of precision voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades. The AIM5X designation indicates a specific accuracy grade and reel packaging format within the SOT-23 package line. It serves as a stable reference for analog circuits requiring minimal quiescent current.

Voltage Reference Replacement Considerations

Consult official substitution guides for compatible parts. Verify pinout compatibility and electrical parameter equivalence before replacing.