LM4040CIX3-5.0

Overview

The LM4040CIX3-5.0 is a micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated, providing a fixed output of 5.0 V. It features an initial accuracy of ±1% and a maximum temperature coefficient of 70 ppm/°C. The device operates within a temperature range of -40°C to +85°C with a maximum shunt current of 15 mA. Packaged in the SC-70-3 (SOT-23-3) surface-mount format, it offers low noise performance suitable for precision applications.

Feature Summary

• Provides stable fixed output voltage across industrial temperature ranges
• Ultra-low operating current consumption for power-constrained designs
• High precision accuracy with minimal temperature drift
• Capable of driving capacitive loads without instability

Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring precise references
• Microcontroller analog-to-digital converter inputs
• Handheld measurement devices

Procurement Notes

Verify the manufacturer designation carefully, as Texas Instruments also produces the LM4040 series. Confirm the specific suffix 'IX3' corresponds to the SC-70-3 package and the '-5.0' indicates the 5V output variant. Ensure compatibility with existing PCB footprints designed for SOT-23-3 components before finalizing procurement orders.

Selection Notes

Select this component when a 5V reference with ±1% tolerance is required in a compact SC-70-3 package. It is suitable for applications prioritizing low quiescent current over ultra-high precision. Consider higher accuracy grades like the LM4040A or B if tighter tolerances are necessary for the specific circuit requirements.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The family includes variants with different accuracies (0.1%, 0.2%, 0.5%, 1%) and output voltages (2.048V, 2.5V, 3.0V, 4.096V, 5.0V). The LM4040C specifically denotes the 1% accuracy grade, balancing cost and performance for general-purpose precision applications.

Replacement Considerations

• LM4040CIM3X-5.0 (Texas Instruments equivalent)
• LM4040DIX3-5.0+T (Analog Devices, similar package)