LM4040CIX3-2.5

Overview

The LM4040CIX3-2.5 is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±0.5%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 100 ppm/°C. It supports a maximum shunt current of 15 mA and requires a minimum cathode current of 60 µA for regulation. The component is housed in a compact SOT-23-3 surface-mount package, designed for space-constrained applications requiring stable voltage references.

Feature Summary

• Provides a fixed 2.5 V precision reference voltage suitable for high-accuracy analog circuits.
• Operates as a two-terminal shunt regulator with low power consumption characteristics.
• Ensures thermal stability through a controlled temperature coefficient across the industrial operating range.

Applications

• Portable instrumentation systems requiring precise voltage standards
• Battery-powered equipment where low quiescent current is critical
• Data acquisition systems utilizing analog-to-digital converters

Procurement Notes

Verify the specific suffix 'IX3' against official manufacturer documentation to confirm pinout compatibility and tape-and-reel specifications. Ensure the sourcing channel provides valid traceability for the Analog Devices or Maxim Integrated brand. Confirm RoHS compliance status directly from the latest datasheet before integration into production designs.

Selection Notes

Select this component when a 2.5 V reference with ±0.5% initial accuracy is required in a small SOT-23-3 footprint. It is appropriate for designs needing operation down to -40°C. Compare against higher accuracy variants like the AIM3 series if tighter tolerance than 0.5% is necessary for the specific application requirements.

Part Context

This part belongs to the LM4040 family of improved precision micropower shunt voltage references. The family offers multiple fixed voltage options including 2.048V, 3.0V, and 5.0V. The 'C' grade denotes the ±0.5% accuracy tier, while the 'IX3' indicates the SC-70/SOT-23-3 package variant optimized for surface-mount assembly processes.

Replacement Considerations

LM4040CIM3-2.5/NOPB (Texas Instruments equivalent)

FAQ

What is the minimum operating current for the LM4040CIX3-2.5?

The device requires a minimum cathode current of 60 µA to maintain proper regulation and voltage stability.

Does the LM4040CIX3-2.5 support operation at temperatures below -40°C?

No, the specified minimum operating temperature for this component is -40°C.