LM4121AIM5-ADJ/NOPB

Voltage Reference Overview

The LM4121AIM5-ADJ/NOPB is a precision shunt adjustable voltage reference from Texas Instruments, housed in an SOT-23-5 surface-mount package. It offers 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 temperature range of -40°C to +85°C and can handle a maximum shunt current of 5 mA.

Voltage Reference Feature Summary

• Provides stable reference voltage with high initial accuracy
• Adjustable output capability for flexible circuit design
• Low temperature coefficient ensures thermal stability
• Compact surface-mount packaging for space-constrained applications

Voltage Reference Applications

• Precision measurement systems requiring stable voltage references
• Portable battery-powered equipment needing low power consumption
• Industrial control circuits utilizing shunt regulation
• Data acquisition systems demanding high accuracy

Voltage Reference Procurement Notes

Verify the specific suffix ADJ/NOPB matches the required adjustable configuration and RoHS compliance status. Confirm the SOT-23-5 package variant aligns with PCB footprint requirements. Ensure the supplier provides official datasheets confirming the 50 ppm/°C temperature coefficient and ±0.5% initial accuracy specifications for quality assurance purposes.

Voltage Reference Selection Notes

Select this component when adjustable voltage referencing is required in a compact form factor. The 50 ppm/°C coefficient makes it suitable for environments with moderate thermal variations. Consider the 5 mA max shunt current limit for load requirements. The SOT-23-5 package is ideal for dense surface-mount layouts where space is limited compared to larger through-hole alternatives.

Voltage Reference Part Context

This part belongs to the LM4121 series of precision shunt voltage references designed by Texas Instruments. It complements fixed-output variants like the LM4120 by offering adjustability while maintaining similar precision characteristics. The series is engineered for applications requiring reliable voltage regulation in small packages, serving as a key component in modern analog signal conditioning and power management designs.

Voltage Reference Replacement Considerations

• LM4121IM5X-ADJ/NOPB

Voltage Reference FAQ

What is the adjustable output voltage range?

The output voltage is adjustable from 1.21 V to 1.222 V.

What is the maximum input voltage supported?

The device supports a maximum series VREF input voltage of 14 V.