LM4040AECT-4.1

Overview

The LM4040AECT-4.1 is a precision micropower shunt voltage reference manufactured by STMicroelectronics, offering a fixed output voltage of 4.1V. It features an initial accuracy of ±0.1% and operates within an industrial temperature range from -40°C to +125°C. The device exhibits a maximum temperature coefficient of 70 ppm/°C and maintains stability when used with capacitive loads. Designed for space-constrained applications, it utilizes the SOT-323-5L surface-mount package. The component draws an ultra-low operating current of 10 µA at 25°C and provides low low-frequency noise performance.

Feature Summary

• Ultra-low power consumption suitable for battery-operated designs
• High precision with tight initial accuracy tolerance
• Stable operation under capacitive load conditions
• Compact surface-mount packaging for space efficiency

Applications

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

Procurement Notes

Verify the specific suffix configuration against official datasheets to ensure correct voltage and package selection. Confirm RoHS compliance status and environmental certifications prior to integration. Cross-reference manufacturer part numbers with distributor listings to validate authenticity and avoid counterfeit components during sourcing.

Selection Notes

Select this component for applications requiring high precision in limited power budgets. Ensure the design accommodates the specified operating temperature range and thermal management requirements. Verify that the circuit topology supports shunt reference operation and matches the required output voltage stability specifications.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The series offers various fixed output voltages and accuracy grades. The A variant denotes the highest precision tier within the lineup. The ECT suffix indicates specific packaging and tape/reel configuration options available for automated assembly processes.

Replacement Considerations

Compatible substitutes include LM4040BIM3-4.1 and LM4040CIM7-4.1/NOPB. Verify pinout compatibility and electrical parameter alignment before substitution. Check for differences in temperature coefficients and initial accuracy tolerances between original and replacement parts.