LM4040AEX3-2.1-T

Overview

The LM4040AEX3-2.1-T is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 2.048V with an initial accuracy of ±0.1%. The device operates within a temperature range of -40°C to +125°C and features a maximum shunt current of 15 mA. Packaged in a compact SC-70-3 surface-mount case, it exhibits a low noise profile suitable for sensitive analog circuits.

Feature Summary

• Precision two-terminal shunt mode bandgap voltage reference design
• Micropower operation with low quiescent current consumption
• High initial accuracy for stable reference performance
• Compact SC-70-3 surface-mount package for space-constrained applications

Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered systems needing low power consumption
• Data acquisition systems requiring stable reference voltages
• Medical equipment utilizing precision analog signal conditioning

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration. Confirm the manufacturer designation as Analog Devices Inc./Maxim Integrated on the component marking. Ensure the part number matches the exact 2.048V output variant. Check RoHS compliance status if required for your manufacturing process. Validate the SC-70-3 package dimensions against your PCB footprint library.

Selection Notes

Select this component when a fixed 2.048V reference is required with high accuracy. Consider the SC-70-3 package size for board space limitations. Evaluate the micropower characteristics for battery-operated designs. Compare temperature coefficients if operating in extreme environments. Verify compatibility with shunt regulator topologies in the target circuit.

Part Context

This component belongs to the LM4040 family of precision shunt voltage references. The family offers various fixed output voltages including 2.048V, 2.5V, 3.0V, 3.3V, 4.096V, and 5.0V. The EX3 suffix typically denotes the SC-70-3 surface-mount package variant. These devices are widely used in industrial and consumer electronics for providing stable reference potentials.

FAQ

What is the nominal output voltage of the LM4040AEX3-2.1-T?

The nominal output voltage is 2.048V.

What package type does this part use?

It uses the SC-70-3 surface-mount package.

Is this device available in a through-hole package?

No, the EX3 suffix specifically indicates the SC-70-3 surface-mount package; through-hole versions exist under different suffixes.