LM4040DELT-4.1

Overview

The LM4040DELT-4.1 is a precision micropower shunt voltage reference manufactured by STMicroelectronics, housed in an SOT23-3L surface-mount package. It provides a fixed output voltage of 4.096 V with an initial accuracy of ±1%. The device operates within an industrial temperature range of -40°C to +125°C and features a maximum temperature coefficient of 70 ppm/°C. Key electrical characteristics include an ultra-low operating current of 10 µA at 25°C, a typical low-frequency noise of 10 µVp-p, and stability when used with capacitive loads.

Feature Summary

• Ultra-low operating current of 10 µA at 25 °C for power-restricted designs
• High precision with ±1% initial accuracy at 25 °C
• Very low low-frequency noise of typically 10 µVp-p
• Stable operation when used with capacitive loads

Applications

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

Procurement Notes

Verify the specific ordering code against the manufacturer's official documentation to ensure correct voltage, tolerance, and package selection. Confirm that the component meets required environmental standards such as RoHS compliance. Check for any recent product changes or obsolescence notices from the supplier before finalizing procurement plans.

Selection Notes

Select this component for applications requiring a stable reference voltage in space-constrained designs utilizing the SOT23-3L package. Consider the ±1% initial accuracy and 70 ppm/°C temperature coefficient for system-level calibration requirements. Ensure the design accommodates the minimum operating current of 10 µA for proper regulation.

Part Context

The LM4040 series comprises low-power, high-accuracy shunt voltage references available in multiple output voltages and precision grades. The LM4040DELT-4.1 represents the 4.096 V variant with 1% tolerance in the SOT23-3L package. This family is designed for industrial temperature ranges and offers stability with capacitive loads, making it suitable for various analog circuit applications.

Replacement Considerations

Cross-reference with other manufacturers' shunt voltage references offering similar 4.096 V outputs and SOT23-3L packages. Verify pinout compatibility, thermal resistance values, and electrical specifications to ensure functional equivalence without redesigning the host circuit.