LM4040BECT-4.1

Overview

The LM4040BECT-4.1 is a micropower shunt voltage reference manufactured by STMicroelectronics, providing a fixed output of 4.096V with an initial accuracy of ±0.2%. It operates within an industrial temperature range of -40°C to +125°C and features a maximum temperature coefficient of 70ppm/°C. The device draws an ultra-low operating current of 10µA at 25°C and exhibits very low low-frequency noise of 10µVp-p. It is housed in a compact SOT-323-5 package and remains stable when used with capacitive loads.

Feature Summary

• Ultra-low operating current of 10µA at 25°C for power-constrained designs
• High precision with ±0.2% initial accuracy at 25°C
• Very low low-frequency noise of 10µVp-p typical value
• Stable operation when used with capacitive loads

Applications

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

Procurement Notes

Verify the specific suffix 'ECT' against the official datasheet to confirm the exact package type (SOT-323-5) and tape/reel configuration. Ensure the ordering code matches the required 4.096V output and ±0.2% tolerance grade. Confirm compliance with RoHS3 standards and check for any recent product change notices regarding packaging or manufacturing location updates before finalizing procurement.

Selection Notes

Select this component for applications requiring high precision in space-constrained environments due to its small SOT-323-5 footprint. The low operating current makes it suitable for battery-operated devices where minimizing quiescent power consumption is critical. Verify that the 4.096V output aligns with system requirements and that the ±0.2% accuracy meets the design's error budget constraints.

Part Context

The LM4040 series consists of micropower shunt voltage references available in various output voltages and accuracy grades. The LM4040B variant specifically denotes the ±0.2% accuracy class. This family is designed for industrial applications, offering stability across a wide temperature range and compatibility with standard surface-mount assembly processes.

Replacement Considerations

LM4040BECT-4.1-TR