LM4120AIM5-2.5

Voltage Reference Overview

The LM4120AIM5-2.5 is a precision micropower low dropout voltage reference manufactured by Texas Instruments, housed in a SOT-23-5 package. It provides a fixed output voltage of 2.5V with an initial accuracy of ±0.2%. The device operates within an input voltage range of 2V to 12V and supports a maximum shunt current of 5mA. Key electrical specifications include a temperature coefficient of 50ppm/°C, supply current of 275µA, and noise levels of 20µVp-p (0.1Hz to 10Hz) and 36µVp-p (10Hz to 10kHz). It functions reliably across a temperature range of -40°C to +85°C.

Voltage Reference Feature Summary

• Precision micropower series voltage reference topology
• Low dropout operation for efficient power management
• High initial accuracy with low temperature drift
• Compact surface-mount packaging for space-constrained designs

Voltage Reference Applications

• Portable instrumentation systems requiring stable reference voltages
• Battery-powered measurement devices
• Data acquisition systems with analog-to-digital conversion
• Microcontroller peripheral voltage references

Voltage Reference Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for end-of-life notifications, as availability may be restricted. Ensure the specific suffix matches required tolerance and packaging options before ordering.

Voltage Reference Selection Notes

Select this component when high precision and low power consumption are critical. The ±0.2% initial accuracy and 50ppm/°C temperature coefficient suit applications demanding stable reference performance over varying thermal conditions. Consider the 275µA supply current for battery life optimization.

Voltage Reference Part Context

Part of the LM4120 family of precision micropower voltage references from Texas Instruments. This series offers various fixed output voltages and accuracy grades, designed for applications requiring reliable reference sources in compact packages. The AIM5 variant denotes specific accuracy and temperature range specifications within the broader product line.

Voltage Reference Replacement Considerations

Consult official datasheets for pin-compatible alternatives such as other LM4120 variants with different output voltages or accuracies. Verify that substitute components match the required input voltage range, shunt current capabilities, and operating temperature specifications.