LM4040CIM3-2.1

Overview

The LM4040CIM3-2.1 is a micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated, housed in a compact SOT-23 package. It provides a fixed output voltage of 2.1V with an initial accuracy of ±0.5%. The device operates within a temperature range of -40°C to +85°C and features a low noise profile of 35µVrms (0.1Hz to 10Hz). Key electrical parameters include a maximum cathode current of 15mA, a minimum operating current of 65µA, and a temperature coefficient of 100ppm/°C.

Feature Summary

• Micropower operation with low quiescent current consumption suitable for battery-powered applications
• High precision performance with tight initial accuracy tolerance
• Low noise characteristics ensuring stable reference signals
• Compact surface-mount packaging for space-constrained designs

Applications

• Portable instrumentation requiring precise voltage references
• Battery-operated measurement systems
• Data acquisition systems
• Handheld devices

Procurement Notes

Verify the manufacturer designation carefully, as this component originates from Maxim Integrated, now part of Analog Devices Inc. Confirm that the specific suffix matches the required voltage and package variant. Ensure compliance with RoHS standards if applicable to your project requirements. Cross-reference datasheets for any updates regarding pinout or thermal characteristics.

Selection Notes

Select this component when a fixed 2.1V reference is needed with high precision and low power consumption. Consider the SOT-23 package size for board layout constraints. Evaluate the temperature coefficient and noise specifications against system requirements. Compare with other variants in the LM4040 series for different voltage outputs or accuracy levels.

Part Context

The LM4040 series represents a family of micropower shunt voltage references known for their precision and low cost. This specific model offers a 2.1V output in a small SOT-23 package, making it suitable for various analog circuits. The series is widely used in industrial and consumer electronics where reliable voltage referencing is critical.

Replacement Considerations

LM4040CIM3-2.1/NOPB