LM4040CELT-3.0

Overview

The LM4040CELT-3.0 is a micropower shunt voltage reference manufactured by STMicroelectronics, providing a fixed output of 3.0 V with an initial accuracy of ±0.5%. It operates within an industrial temperature range of -40 °C to +125 °C and features a maximum temperature coefficient of 70 ppm/°C. The device maintains stability when used with capacitive loads and exhibits very low low-frequency noise, typically 10 µVp-p. It is housed in a compact SOT23-3L surface-mount package.

Feature Summary

• Ultra-low operating current of 10 µA at 25 °C for power-constrained designs
• High precision with ±0.5% 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 against official documentation to ensure correct voltage, accuracy, and package selection. Confirm that the component meets required environmental standards such as RoHS compliance before procurement. Cross-reference datasheet revision history for any updates to electrical characteristics or thermal data prior to finalizing supply agreements.

Selection Notes

Select this component for applications requiring stable voltage references in space-constrained environments due to its small SOT23-3L footprint. Ensure the design accommodates the minimum operating current requirements across the full specified temperature range. Consider the ±0.5% accuracy tolerance relative to system precision needs.

Part Context

This part belongs to the LM4040 series of precision micropower shunt voltage references from STMicroelectronics. The series offers multiple fixed output voltages including 2.048 V, 2.5 V, 3.0 V, 4.096 V, and 5.0 V. Variants are available with different accuracy grades ranging from ±0.1% to ±1%, catering to various precision requirements in analog circuit design.

Replacement Considerations

LM4040BELT-3.0

FAQ

What is the maximum temperature coefficient for the LM4040CELT-3.0?

The maximum temperature coefficient is 70 ppm/°C over the operating current range.

Is the LM4040CELT-3.0 stable with capacitive loads?

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