LM4041CIZ-ADJ/NOPB

Overview

The LM4041CIZ-ADJ/NOPB is a micropower shunt voltage reference IC manufactured by Texas Instruments, formerly National Semiconductor. It features an adjustable output voltage range from 1.233 V to 15 V with an initial accuracy of ±0.5%. The device operates within a temperature coefficient of 100 ppm/°C and supports a maximum shunt current of 12 mA. It is housed in a TO-92-3 through-hole package and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Adjustable output voltage capability spanning from the minimum reference level up to 15 V
• High precision performance characterized by ±0.5% initial accuracy
• Micropower operation designed for low current consumption applications
• Robust thermal stability with a temperature coefficient of 100 ppm/°C

Applications

• Precision analog-to-digital converter (ADC) reference sources
• Battery-powered instrumentation requiring stable voltage references
• Portable equipment power management circuits
• Temperature sensing signal conditioning stages

Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor, when sourcing this component. Confirm the specific suffix NOPB indicates lead-free compliance and RoHS adherence. Ensure the TO-92-3 through-hole package matches your PCB footprint requirements. Check for active status availability as supply chain conditions may vary between distributors.

Selection Notes

Select this component when an adjustable shunt reference is required in a through-hole configuration. The ±0.5% accuracy suits general precision applications, while the 100 ppm/°C coefficient provides adequate thermal stability for most industrial environments. Consider the 12 mA maximum current limit when designing bias networks. The wide input voltage range allows flexibility in system design without requiring multiple fixed-voltage parts.

Part Context

This part belongs to the LM4041-N series of precision micropower shunt voltage references. The series includes both fixed and adjustable variants packaged in SC-70 and TO-92 formats. The LM4041CIZ-ADJ/NOPB specifically targets applications needing adjustable reference voltages in standard through-hole enclosures, bridging legacy National Semiconductor designs with modern Texas Instruments manufacturing standards.

Replacement Considerations

Direct substitutes include other LM4041 series adjustable variants such as LM4041CIM7-ADJ/NOPB for surface mount needs. Fixed voltage versions like LM4041BIM7X-1.2/NOPB serve if a specific reference value suffices. Verify pinout compatibility and thermal characteristics when cross-referencing with other shunt reference families.