LM4041AIM3X-1.2/NOPB

Overview

The LM4041AIM3X-1.2/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed output of 1.225 V. It offers an initial accuracy of ±0.1% at 25°C and operates within an extended temperature range of -40°C to +125°C. The device utilizes a SOT-23 (SC-70) surface-mount package with three pins. Key electrical parameters include a maximum temperature coefficient of 100 ppm/°C, a minimum operating current of 45 µA, and a maximum shunt current of 12 mA. It maintains stability with any capacitive load without requiring external stabilization components.

Feature Summary

• Provides high-precision voltage referencing with ±0.1% initial accuracy at 25°C
• Operates in extended industrial temperature environments up to 125°C
• Ensures stability with any capacitive load without external compensation
• Features ultra-low power consumption suitable for battery-operated systems

Applications

• Portable handheld devices requiring space-saving voltage references
• Battery-powered instrumentation and measurement equipment
• Microprocessor supervisory circuits and monitoring systems
• Data acquisition systems requiring stable analog references

Procurement Notes

Verify the specific suffix 'AIM3X' corresponds to the intended accuracy grade and package variant when sourcing. Confirm that the 'NOPB' designation indicates lead-free compliance as per manufacturer specifications. Ensure the procurement channel provides valid traceability for automotive or industrial qualification requirements if applicable. Cross-reference the datasheet revision to confirm parameter consistency during ordering.

Selection Notes

Select this component when design constraints demand both minimal footprint and high voltage accuracy in harsh thermal conditions. The 1.225 V output is ideal for low-voltage ADC references where headroom is limited. Consider the 45 µA minimum current requirement to ensure proper regulation under light load conditions. Evaluate the SOT-23 package dimensions against board space limitations compared to larger packages like SOIC.

Part Context

This part belongs to the LM4041-N family of precision micropower shunt voltage references from Texas Instruments. The family includes variants with different accuracies (0.2%, 0.5%, 1%) and temperature ranges (industrial vs. extended). The AIM3X designation specifically denotes the A-grade accuracy and SOT-23 package configuration within this series.

Replacement Considerations

LM4041DIM3X-1.2/NOPB: Offers similar functionality but with ±0.5% initial accuracy instead of ±0.1%. Suitable if tighter tolerance is not required. LM4041CIM3X-1.2/NOPB: Provides ±0.5% accuracy and is pin-compatible. Verify temperature range and accuracy requirements before substituting.