LM4120AIM5-1.8/NOPB

Voltage Reference Overview

The LM4120AIM5-1.8/NOPB is a precision micropower series voltage reference manufactured by Texas Instruments, housed in a compact SOT-23-5 surface-mount package. It delivers a fixed output voltage of 1.8V 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 and a supply current of 275µA. Noise performance is rated at 20µVp-p from 0.1Hz to 10Hz and 36µVp-p from 10Hz to 10kHz. The component functions reliably across an extended industrial temperature range of -40°C to +85°C.

Voltage Reference Feature Summary

• Provides high-precision fixed voltage output with tight initial tolerance for accurate signal conditioning.
• Features low power consumption suitable for battery-operated and space-constrained designs.
• Delivers low noise performance essential for sensitive analog-to-digital conversion applications.

Voltage Reference Applications

• Portable instrumentation requiring stable reference voltages
• Battery-powered measurement systems
• Data acquisition channels

Voltage Reference Procurement Notes

Verify the specific suffix configuration against the manufacturer's official datasheet to ensure compatibility with your design requirements. Confirm that the ordering code matches the exact output voltage and package type needed. Check current availability status as inventory levels fluctuate. Ensure compliance with RoHS directives if required by your manufacturing standards. Validate pinout assignments against your PCB footprint library before finalizing procurement.

Voltage Reference Selection Notes

Select this component when a fixed 1.8V reference is required with high accuracy and low power consumption. Consider the SOT-23-5 package for space-limited layouts. Evaluate the 50ppm/°C temperature coefficient against your system's thermal stability needs. Compare the 275µA supply current against total budget constraints. Ensure the input voltage range accommodates your supply rail variations.

Voltage Reference Part Context

This part belongs to the LM4120 family of precision micropower series voltage references from Texas Instruments. The family is designed for applications demanding high accuracy and low noise in small packages. Variants within the series offer different fixed output voltages while maintaining similar electrical characteristics and packaging options. The LM4120 series serves as a reliable solution for general-purpose voltage referencing tasks.

Voltage Reference Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference options through official manufacturer channels or authorized distributors to ensure equivalent electrical performance and pin compatibility.