LM4120AIM5-1.8

Voltage Reference Overview

The LM4120AIM5-1.8 is a precision micropower low dropout voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.8 V with an initial accuracy of ±0.2% and a temperature coefficient of 50 ppm/°C. The device operates within an input voltage range of 2 V to 12 V and supports a maximum shunt current of 5 mA. It functions reliably across a temperature range of -40°C to +85°C. The component is housed in a compact SOT-23-5 surface-mount package, designed for space-constrained applications requiring stable voltage regulation.

Voltage Reference Feature Summary

• Delivers high-precision voltage regulation with tight initial accuracy tolerances
• Features low dropout operation suitable for battery-powered systems
• Provides stable reference performance across extended industrial temperature ranges

Voltage Reference Applications

• Portable instrumentation requiring precise analog references
• Battery-operated measurement devices needing low quiescent current
• Data acquisition systems utilizing analog-to-digital converters

Voltage Reference Procurement Notes

Verify the specific suffix configuration against official datasheets to ensure correct output voltage and tolerance grades. Confirm package availability and lead times through authorized distributors as supply levels fluctuate. Check for RoHS compliance status and environmental certifications relevant to your region before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when a fixed 1.8 V reference with ±0.2% accuracy is required in a small footprint. Ensure the input voltage remains within the specified 2 V to 12 V range for proper regulation. Consider the 50 ppm/°C temperature coefficient for thermal stability requirements in your specific circuit design environment.

Voltage Reference Part Context

This part belongs to the LM4120 series of precision micropower voltage references from Texas Instruments. The series offers various fixed output voltages and accuracy grades in SOT-23 packages. It serves as a reliable reference source for analog circuits where size and power consumption are critical constraints.

Voltage Reference Replacement Considerations

Check for direct pin-compatible alternatives within the same family or other manufacturers offering similar 1.8 V precision references. Verify that substitute components match the electrical specifications, particularly accuracy and temperature coefficient, before integration.