LM4040BELT-4.1

Overview

The LM4040BELT-4.1 is a micropower shunt voltage reference manufactured by STMicroelectronics, providing a fixed output voltage of 4.096 V. It features an initial accuracy of ±0.2% at 25 °C and operates within an industrial temperature range of -40 °C to +125 °C. The device exhibits a maximum temperature coefficient of 70 ppm/°C and maintains stability when used with capacitive loads. It is housed in a SOT23-3L surface-mount package.

Feature Summary

• Ultra-low operating current suitable for power-restricted designs
• High precision with ±0.2% initial accuracy at 25 °C
• Stable operation with capacitive loads
• Low low-frequency noise performance

Applications

• Portable battery-operated equipment
• Data acquisition systems
• Instrumentation

Procurement Notes

Verify the specific ordering code against official manufacturer documentation to confirm the exact output voltage, tolerance class, and package type. Ensure compatibility with the intended PCB footprint and thermal management requirements. Confirm that the component meets all necessary environmental compliance standards required for the final product assembly.

Selection Notes

Select this component for applications requiring a stable reference voltage with minimal power consumption. The ±0.2% tolerance offers higher precision than standard versions while maintaining low current draw. Consider the SOT23-3L package size for space-constrained designs where a compact form factor is essential for integration into portable devices.

Part Context

This part belongs to the LM4040 family of precision micropower shunt voltage references. The series provides various fixed output voltages and accuracy grades to suit different design needs. The LM4040BELT-4.1 specifically targets applications needing 4.096 V with moderate precision in a small surface-mount package.

Replacement Considerations

LM4040AELT-4.1 (±0.1% accuracy)

FAQ

What is the minimum operating current for the LM4040BELT-4.1?

The minimum operating current is specified as 10 µA at 25 °C.

Is the LM4040BELT-4.1 stable with capacitive loads?

Yes, the datasheet confirms that the device is stable when used with capacitive loads.