LM4040DELT-2.0

Overview

The LM4040DELT-2.0 is a precision micropower shunt voltage reference manufactured by STMicroelectronics, providing a fixed output voltage of 2.048 V. It features an initial accuracy of ±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. Packaged in SOT23-3L, it supports a reverse breakdown current up to 20 mA and maintains stability 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 (typical 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 LM4040DELT-2.0 against the manufacturer's official documentation to confirm package type, output voltage, and accuracy grade. Ensure that the application environment remains within the specified industrial temperature limits (-40 °C to +125 °C) and respects absolute maximum ratings, particularly regarding reverse breakdown current and power dissipation constraints.

Selection Notes

Select this component for applications requiring a stable 2.048 V reference with ±1% tolerance. Consider the SOT23-3L package for space-constrained designs. Evaluate the 70 ppm/°C temperature coefficient against system thermal requirements. Confirm compatibility with load conditions, as the device is designed to remain stable with capacitive loads, ensuring reliable performance across the full operating current range.

Part Context

The LM4040 series comprises low-power, high-accuracy shunt voltage references available in multiple output voltages and accuracy grades. The LM4040DELT-2.0 represents the 1% accuracy variant with a 2.048 V output in the SOT23-3L package. This family is engineered for industrial environments, offering robust performance with minimal quiescent current, making it suitable for battery-powered and portable electronic systems.

Replacement Considerations

LM4040CELT-2.0

FAQ

What is the minimum operating current for the LM4040DELT-2.0?

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

Is the LM4040DELT-2.0 stable with capacitive loads?

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