LM4121IM5X-ADJ/NOPB

Voltage Reference Overview

The LM4121IM5X-ADJ/NOPB is a series adjustable voltage reference from Texas Instruments, housed in an SOT-23-5 surface-mount package. It provides an output voltage range of 1.21 V to 1.222 V with an initial accuracy of 0.5%. The device features a temperature coefficient of 50 ppm/°C and supports a maximum input voltage of 14 V. It operates within a junction current limit of 5 mA and functions across a temperature range of -40°C to +85°C.

Voltage Reference Feature Summary

• Provides stable series adjustable voltage reference performance
• Maintains high precision with low temperature drift characteristics
• Designed for compact surface-mount integration

Voltage Reference Applications

• Precision measurement systems requiring stable reference voltages
• Data acquisition circuits needing accurate analog references
• Battery-powered instrumentation utilizing low-power references

Voltage Reference Procurement Notes

Verify the specific suffix and package type against official datasheets to ensure compatibility with design requirements. Confirm RoHS compliance status and operating temperature range specifications before procurement. Cross-reference manufacturer part numbers to avoid counterfeit components and ensure supply chain integrity.

Voltage Reference Selection Notes

Select this component when a compact, adjustable series reference with moderate precision is required. Consider the 0.5% initial accuracy and 50 ppm/°C temperature coefficient for applications demanding stability over varying thermal conditions. Ensure the load current remains within the specified maximum limits for reliable operation.

Voltage Reference Part Context

This device belongs to the LM4121 family of precision voltage references. It serves as a compact alternative to larger packages while maintaining essential reference characteristics. The series configuration distinguishes it from shunt regulators, offering flexibility in circuit design for various power management applications.

Voltage Reference Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pinout compatibility and electrical parameter overlaps before replacing existing designs with equivalent parts from the same or different manufacturers.