LM4041DECT-1.2

Voltage Reference Overview

The LM4041DECT-1.2 is a micropower shunt voltage reference manufactured by STMicroelectronics, providing a fixed output voltage of 1.225 V. It features an initial accuracy of ±1% at 25 °C and a maximum temperature coefficient of 150 ppm/°C. The device operates within an extended industrial temperature range from -40 °C to +125 °C. Key electrical parameters include a minimum cathode current of 73 µA and a maximum operating current of 12 mA. It utilizes a SOT23-3 surface mount package.

Voltage Reference Feature Summary

• Fixed 1.225 V output voltage with ±1% initial accuracy
• Extended temperature operation from -40 °C to +125 °C
• Micropower design with low minimum operating current
• Stable performance in space-constrained surface-mount applications

Voltage Reference Applications

• Battery-operated equipment requiring precise voltage references
• Handheld instruments and portable devices
• Temperature measurement systems
• Data acquisition circuits

Voltage Reference Procurement Notes

Verify the specific manufacturer designation for the requested model, as the LM4041 series is produced by multiple vendors including Texas Instruments, Diodes Incorporated, and STMicroelectronics. Confirm that the component matches the required 1.225 V output, ±1% tolerance, and 150 ppm/°C temperature coefficient specifications. Ensure the SOT23-3 package type aligns with the board layout requirements before finalizing procurement.

Voltage Reference Selection Notes

Select this component when an extended temperature range up to 125 °C is required alongside a fixed 1.225 V reference. The ±1% accuracy and 150 ppm/°C temperature coefficient are suitable for general-purpose precision applications. Consider the low operating current for power-sensitive designs, but verify that the minimum cathode current requirement is met by the circuit bias conditions.

Voltage Reference Part Context

The LM4041DECT-1.2 belongs to the LM4041 family of micropower shunt voltage references. This series offers various accuracy grades and temperature ranges, utilizing bandgap reference technology with curvature correction. The device eliminates the need for external stabilizing capacitors while maintaining stability across a wide range of capacitive loads, facilitating easy integration into compact electronic designs.

Voltage Reference Replacement Considerations

LM4041D12IDBZR (Texas Instruments)

Voltage Reference FAQ

What is the maximum temperature coefficient for the LM4041DECT-1.2?

The maximum temperature coefficient is 150 ppm/°C.

Does the LM4041DECT-1.2 require an external capacitor for stability?

No, the advanced design ensures stability without the need for an external stabilizing capacitor.