LM4040AECT-5.0

Overview

The LM4040AECT-5.0 is a micropower shunt voltage reference manufactured by STMicroelectronics, providing a fixed 5.0 V output. It features an initial accuracy of ±0.1% 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 ultra-low operating current of 10 µA at 25°C. It maintains stability with capacitive loads and offers very low low-frequency noise, typically 10 µVp-p. The component is housed in a compact SOT323-5L surface-mount package.

Feature Summary

• Ultra-low operating current of 10 µA at 25°C for power-constrained designs
• High precision with ±0.1% initial accuracy at 25°C
• Very low low-frequency noise, typically 10 µVp-p
• Stable operation when used with capacitive loads

Applications

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

Procurement Notes

Verify the specific suffix 'ECT' against official STMicroelectronics documentation to confirm the exact package type (SOT323-5L) and tape-and-reel packaging configuration. Ensure the part number matches the required 5.0 V output variant and ±0.1% accuracy grade. Cross-reference with the manufacturer's datasheet to validate RoHS compliance status and availability before procurement.

Selection Notes

Select this component for applications requiring high precision and minimal power consumption in space-limited environments. The SOT323-5L package is suitable where board area is critical. Consider the 70 ppm/°C temperature coefficient for thermal stability requirements. Verify that the 15 mA maximum cathode current meets the circuit design needs for shunt regulation.

Part Context

The LM4040 series comprises micropower shunt voltage references available in multiple fixed output voltages including 2.048 V, 2.5 V, 3.0 V, 4.096 V, and 5.0 V. The series includes variants with different initial accuracies: ±0.1% (A), ±0.2% (B), ±0.5% (C), and ±1% (D). These devices are designed for industrial temperature ranges and offer stability with capacitive loads.

Replacement Considerations

LM4040AELT-5.0

FAQ

Is the LM4040AECT-5.0 stable with capacitive loads?

Yes, the LM4040 series is designed to be stable when used with capacitive loads.

What is the typical low-frequency noise performance?

The typical low-frequency noise is 10 µVp-p.