LM4040AEX3-3.3+T

Overview

The LM4040AEX3-3.3+T is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse-breakdown output voltage of 3.3V with an initial accuracy of 0.1% and a maximum temperature coefficient of 100ppm/°C. The device operates within a wide current range from 60μA to 15mA and is guaranteed over the extended industrial temperature range of -40°C to +125°C. It utilizes a subminiature 3-pin SC70 surface-mount package.

Feature Summary

• Ultra-small 3-pin SC70 package for space-critical applications
• High precision with 0.1% maximum initial accuracy
• Stable operation without external stabilizing capacitors
• Capable of tolerating any capacitive load

Applications

• Portable, battery-powered equipment
• Notebook computers
• Cell phones
• Industrial process controls
• Automotive systems

Procurement Notes

Verify that the specific part number matches the required electrical specifications, including the 3.3V output, 0.1% accuracy grade, and SC70 package type. Confirm the manufacturer designation as Analog Devices Inc./Maxim Integrated. Ensure compliance with RoHS standards if applicable to the design requirements. Cross-reference ordering information tables in official datasheets to validate suffixes and availability status.

Selection Notes

Select this component when high precision and compact size are critical constraints. The 0.1% accuracy grade ensures tight tolerance at room temperature. Verify that the operating environment falls within the specified -40°C to +125°C range. Consider the thermal resistance characteristics of the SC70 package if high power dissipation or elevated ambient temperatures are anticipated during operation.

Part Context

This component belongs to the LM4040 family of improved precision micropower shunt voltage references. The family offers multiple fixed reverse-breakdown voltages and various accuracy grades. The 'A' suffix denotes the highest precision grade (0.1%), while the 'EX3' indicates the SC70 package and extended temperature range capability. This specific variant targets applications requiring stable references in minimal footprint designs.

Replacement Considerations

LM4040BEX3-3.3+T

FAQ

Does the LM4040AEX3-3.3+T require an external capacitor for stability?

No, the device does not require an external stabilizing capacitor and remains stable with any capacitive load.

What is the minimum operating current for this device?

The device requires a minimum operating current of 60μA to maintain proper regulation.