LM4041DEX3-1.2-T

Voltage Reference Overview

The LM4041DEX3-1.2-T is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 1.225 V with an initial accuracy of ±0.1% at 25°C. The device operates within a wide current range, featuring a minimum operating current of 60 µA and a maximum of 12 mA. It utilizes a sub-miniature SC-70 surface-mount package (Dex3) to support space-critical designs. The component ensures stability with any capacitive load without requiring external stabilizing capacitors.

Voltage Reference Feature Summary

• Provides high-precision fixed voltage reference with advanced bandgap curvature correction for stable performance across temperature variations.
• Eliminates the need for external stabilizing capacitors while maintaining stability with any capacitive load.
• Utilizes fuse and Zener-zap reverse breakdown trim during wafer sort to ensure tight initial accuracy tolerances.
• Features low dynamic impedance and low noise characteristics suitable for sensitive analog signal processing applications.

Voltage Reference Applications

• Data acquisition systems requiring precise voltage references
• Portable battery-powered equipment due to ultra-low operating current
• Process control instrumentation and test equipment
• Power supply monitoring circuits

Voltage Reference Procurement Notes

Verify the manufacturer designation as Analog Devices Inc. or Maxim Integrated, as product lines merged. Confirm the specific suffix 'T' indicates tape-and-reel packaging if required by assembly equipment. Ensure the 'DEX3' code corresponds to the SC-70 package variant. Cross-reference the grade 'A' implied by the 1.2V model number against datasheet specifications for ±0.1% tolerance requirements.

Voltage Reference Selection Notes

Select this component when space constraints necessitate the SC-70 package format. Choose this part for applications requiring a fixed 1.225 V reference with high initial accuracy. Consider the low quiescent current for battery-operated designs. Verify that the operating temperature range meets the specific environmental conditions of the target application.

Voltage Reference Part Context

This component belongs to the LM4041-N family of precision micropower shunt voltage references. The family includes adjustable versions and various accuracy grades. The LM4041 series is designed to replace larger through-hole references in modern compact electronics. It shares core architectural features with other members like the LM4041DIM3X variants but differs in package type and specific electrical tolerances.

Voltage Reference Replacement Considerations

LM4041DEX3-1.2+T: Identical functional specification with lead-free compliance indicated by the '+' suffix.

Voltage Reference FAQ

Does the LM4041DEX3-1.2-T require an external capacitor for stability?

No, the advanced design of the LM4041-N eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load.

What is the typical output noise specification for this device?

The device features a low output noise of typically 20µVRMS in the 10Hz to 10kHz bandwidth.