LM4040BIX3-2.1

Overview

The LM4040BIX3-2.1 is a micropower shunt voltage reference manufactured by Analog Devices Inc. under the Maxim Integrated brand. It provides a fixed output voltage of 2.1V with an initial accuracy of 0.2%. The device operates within a temperature range of -40°C to +85°C and features a maximum temperature coefficient of 100 ppm/°C. Electrical specifications include a minimum operating current of 60 µA and a maximum shunt current of 15 mA. It is housed in an SC-70-3 surface-mount package.

Feature Summary

• Provides stable precision voltage reference performance across industrial temperature ranges
• Designed for power-constrained applications due to ultra-low operating current consumption
• Capable of maintaining stability when driving capacitive loads

Applications

• Portable battery-powered instrumentation systems
• Handheld measurement devices requiring precise voltage standards
• Data acquisition systems utilizing analog-to-digital conversion
• Temperature sensing circuits requiring accurate reference sources

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer engagement. Confirm specific lot traceability and RoHS compliance status prior to integration into production designs. Ensure storage conditions align with manufacturer guidelines to maintain long-term reliability and prevent moisture-induced damage during soldering processes.

Selection Notes

Select this component when a compact surface-mount solution is required for low-power precision referencing. The SC-70-3 package offers space efficiency compared to larger alternatives. Evaluate thermal management requirements against the specified operating temperature limits. Consider the 0.2% initial accuracy tolerance relative to system-level error budgets before finalizing the design choice.

Part Context

This part belongs to the LM4040 family of improved precision micropower shunt voltage references. The series includes various accuracy grades and output voltages, all sharing common low-power characteristics. The LM4040B variant specifically denotes the 0.2% accuracy tier within the product line, offering a balance between precision and cost-effectiveness for general-purpose applications.

Replacement Considerations

LM4040BIM3-2.1+T serves as a verified substitute option within the same product family.