LM4041CEM3-ADJ-TI

Voltage Reference Overview

The LM4041CEM3-ADJ-TI is a precision micropower shunt voltage reference from Texas Instruments, housed in an SC-70 (SOT-323) surface-mount package. It features an adjustable output range of 1.225V to 10V using external resistors. The device offers C-grade accuracy with ±0.5% initial tolerance and a temperature coefficient of 100 ppm/°C. Operating current ranges from 45µA to 12mA, supporting stable performance across -40°C to +85°C. It exhibits low dynamic impedance and noise, requiring no output capacitor for stability with capacitive loads.

Voltage Reference Feature Summary

• Adjustable output voltage configuration via external resistor divider
• Stable operation with all capacitive loads without external compensation
• Low dynamic impedance and low noise characteristics for precision applications

Voltage Reference Applications

• Data acquisition systems
• Portable battery-powered equipment
• Process control instrumentation
• Precision audio circuits

Voltage Reference Procurement Notes

Verify the specific suffix 'ADJ' confirms the adjustable variant rather than fixed voltage options. Ensure the 'CEM3' designation matches the required SC-70 footprint and thermal profile. Confirm that the tape-and-reel packaging aligns with automated assembly requirements. Cross-reference the grade code to ensure compliance with specified tolerance and temperature coefficient limits for the target design.

Voltage Reference Selection Notes

Select this component when an adjustable reference voltage within the 1.225V to 10V range is required in a compact SC-70 package. It is suitable for designs prioritizing low quiescent current and high precision over wide temperature variations. Consider the ±0.5% tolerance and 100 ppm/°C drift if strict accuracy constraints exist. Evaluate the need for external programming resistors against space and cost limitations compared to fixed-voltage alternatives.

Voltage Reference Part Context

This part belongs to the LM4041 family of precision micropower shunt references. It shares core electrical characteristics with other variants but differs in output adjustability and package type. The family utilizes Zener-zap trimming for tight tolerances. It serves as a drop-in replacement for legacy National Semiconductor LM4041 devices in industrial and portable applications requiring reliable voltage referencing.

Voltage Reference Replacement Considerations

LM4041CEM3-1.2/NOPB: Fixed 1.225V output in same package; omit if adjustment is needed. LM4041QIM3-ADJ-TI: Automotive qualified version with extended temperature range up to 125°C. LM4041DEM3-ADJ-TI: D-grade (±1%) variant offering lower cost with reduced precision.