LM4120AIM5-5.0

Voltage Reference Overview

The LM4120AIM5-5.0 is a precision micropower low dropout voltage reference manufactured by Texas Instruments. It provides a fixed nominal output voltage of 5 V with an initial accuracy of ±0.2%. The device operates within an input voltage range of 2 V to 12 V and draws a supply current of 275 µA. It features a temperature coefficient of 50 ppm/°C and supports a maximum shunt current of 5 mA. The component is housed in a SOT-23-5 package, suitable for surface mount installation, and functions reliably across a temperature range of -40°C to +85°C.

Voltage Reference Feature Summary

• Provides high-precision fixed voltage output with tight initial tolerance
• Operates as a micropower device with low quiescent current consumption
• Features low dropout characteristics for efficient regulation
• Designed for stable performance over specified industrial temperature ranges

Voltage Reference Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement systems
• Data acquisition circuits
• Microcontroller analog-to-digital converter references

Voltage Reference Procurement Notes

Verify the specific suffix and revision level against the manufacturer's latest datasheet to ensure compatibility with design requirements. Confirm RoHS compliance status and lead times through authorized distributors, as availability may vary. Check for any recent product change notices regarding packaging or material composition updates before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when a fixed 5 V reference with ±0.2% accuracy is required in a compact SOT-23-5 footprint. Ensure the input voltage remains within the 2 V to 12 V operational window. Consider the 275 µA supply current for battery life calculations. Verify that the 50 ppm/°C temperature coefficient meets the thermal stability needs of the application environment.

Voltage Reference Part Context

The LM4120 series consists of precision micropower low dropout voltage references designed for applications where space and power consumption are critical constraints. Manufactured by Texas Instruments, these devices offer high accuracy and stability. The AIM5-5.0 variant specifically denotes the 5 V output version with improved initial accuracy compared to standard grades, packaged in a small outline transistor case.

Voltage Reference Replacement Considerations

LM4120AIM5-5.0/NOPB is a direct equivalent offering identical electrical specifications and pinout configuration.