LM4121AIM5-ADJ

Voltage Reference Overview

The LM4121AIM5-ADJ is a precision shunt adjustable voltage reference manufactured by Texas Instruments. It operates within an input voltage range of up to 14 V and supports output voltages from 1.21 V to 1.222 V. The device features an initial accuracy of 0.5% and a temperature coefficient of 50 ppm/°C. It functions with a maximum shunt current of 5 mA and operates across a temperature range of -40°C to +85°C. Packaged in SOT-23-5, it serves as a stable reference for analog circuits.

Voltage Reference Feature Summary

• Provides adjustable series reference functionality with high precision
• Maintains stability across wide temperature variations
• Supports low power operation with minimal quiescent current

Voltage Reference Applications

• Precision data acquisition systems
• Portable instrumentation requiring stable references
• Battery-powered measurement devices

Voltage Reference Procurement Notes

Verify the specific suffix and package variant against official datasheets before procurement. Confirm RoHS compliance status and lead times through authorized distributors. Ensure the ordering part number matches the required tolerance and temperature grade specifications for your application.

Voltage Reference Selection Notes

Select this component when an adjustable voltage reference with 0.5% initial accuracy is required. It is suitable for applications needing a stable reference under varying load conditions. Consider the SOT-23-5 package size for space-constrained designs. Verify input voltage limits do not exceed 14 V.

Voltage Reference Part Context

This device belongs to the LM4121 family of precision shunt voltage references. It offers adjustable output capabilities compared to fixed-voltage counterparts. The series is designed for applications requiring high accuracy and low noise in compact surface-mount packages.

Voltage Reference Replacement Considerations

Check for direct pin-compatible substitutes within the same manufacturer's portfolio. Verify that alternative parts meet the 0.5% accuracy and 50 ppm/°C temperature coefficient requirements. Ensure the replacement supports the 14 V maximum input voltage constraint.