LM4040AEM3-3.0-T

Overview

The LM4040AEM3-3.0-T is a micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated, housed in an SOT-23-3 surface-mount package. It provides a fixed output voltage of 3.0 V with an initial accuracy of ±0.1%. The device features a maximum temperature coefficient of 100 ppm/°C and supports a maximum shunt current of 15 mA. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Provides high precision voltage referencing with ±0.1% initial accuracy at 25°C
• Operates with ultra-low quiescent current suitable for power-constrained designs
• Maintains stability when driving capacitive loads

Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring stable reference voltages
• Handheld meters and test equipment

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration. Confirm that the manufacturer designation matches Analog Devices or Maxim Integrated as the component has transitioned between these entities. Ensure the operating temperature range aligns with system requirements.

Selection Notes

Select this component when a 3.0 V reference with tight tolerance is required in a compact SOT-23-3 footprint. Consider the 100 ppm/°C temperature coefficient for applications where thermal drift must be minimized. Verify that the 15 mA maximum shunt current meets the load requirements of the circuit design.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The family offers various accuracy grades (A, B, C, D) and output voltages. The 'A' grade denotes the highest precision tier within this series, providing ±0.1% accuracy compared to looser tolerances in other variants.

Replacement Considerations

LM4040BIM3-3.0+T: Offers similar functionality but with ±0.2% accuracy instead of ±0.1%. LM4040CEM3-3.0+T: Provides ±0.5% accuracy and extends the maximum operating temperature to +125°C.